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ASRock AB350 Pro4, $90 - https://www.newegg.com/Product/Product.aspx?Item=N82E16813157761&cm_re=am4-_-13-157-761-_-Product
ASRock Fatal1ty AB350 Gaming K4 , $104 - https://www.newegg.com/Product/Product.aspx?Item=N82E16813157759&cm_re=am4-_-13-157-759-_-Product
ASRock Fatal1ty X370 Gaming K4, $149 - https://www.newegg.com/Product/Product.aspx?Item=N82E16813157758&cm_re=am4-_-13-157-758-_-Product

MSI X370 GAMING PRO CARBON, $179 - https://www.amazon.com/MSI-X370-GAMING-PRO-CARBON/dp/B06WGS4FJL/ref=sr_1_6?s=pc&ie=UTF8&qid=1488707250&sr=1-6&keywords=am4


ASUS Prime X370-Pro, $170 - https://www.amazon.com/Prime-X370-Pro-Ryzen-Motherboard-Lighting/dp/B06WD4N297/ref=sr_1_5?s=pc&ie=UTF8&qid=1488707250&sr=1-5&keywords=am4

By the way, R7 1700 is 500h/s in XMR, https://forums.servethehome.com/index.php?threads/monero-mining-performance.12116/

Does anyone has these mobos and can test them for mining?

I'm tempted to go with the cheapest ryzen cpu when Vega launches (Ideally 4C4T, but it might not launch before vega). It brings some XMR mining ability, the ability to cpu mine new coins and handle high cpu load unoptimized miners (like in the early days of zcash) and imo, slower depreciation and easier resell of the cpu and mobo. It will be good to know if 6 gpus work.

I don't see the point of buying a 500$ cpu for 500h/s monero, better get a cheap 50$ cpu, and take the 450$ to buy more GPU's, will keep an eye on the motherboard capabilities @6gpus though.

There are some economical 5-6 pciex slot motherboards available for the am4 socket.
I am very interested too.

Sharks charge way to much for Asrock Btc boards.

i hope they are suited for 5-6 gpu because the fact that they have so many x1 isn't a guranteed that they will work, the z97 pro 4 for example have 5 slot, but the x1 don't work with risers...

it is costly  and I have found 5 and 6 card  intel z270's mobos

I can use a intel i5 6400t that is 130 on ebay and a board for 109  cost = 239



amd the cpu is 399  plus 100 = 499

I don't recommend it.

Very interesting. Which mobo are you using? 6 cards definitely is better than 4 or 5.

this does 5

https://www.newegg.com/Product/Product.aspx?Item=N82E16813128966&cm_re=aorus-_-13-128-966-_-Product

my review is there under philip a

this does 5

https://www.amazon.com/gp/product/B01N2V0AHI/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1


my guess is both do six  but I don't bother to try

I have discovered an exploit  so  I use 2 cards per board  and miner eth and decred only  using claymore 8.

I can do this since I had  all 4 card riser less builds  I sold off  ½ my gpus to get ready for new 500 series amd.

I had the rigs paid for   so to play around I tried  running 2 cards a rig  rather then the 4. very easy on the gear.

I discovered  that eth and decred  can run at settings of -ethi 22 and -dcri 45  and

 for my 6 two card rigs  and 1 one card rig and 1 pandaminer

power went from 12 amps x 240 volts to 13 amps 240 volts

or 2880 watts to 3120 watts  that is 240 more watts  with a jump in eth of 20-25mh  for all cards  plus over 7000mh in decred

this only works if you have a good cpu like an i5  all my boards have an i5 except the panda miner


so my increase in hash is in my 4 card rigs running  2 or 1 card.

those 13 cards across 7 rigs now do

https://i.imgur.com/pnT9tVE.png

  So you have perfect or close to perfect reliability?
I get that it is not practical  to start  with all those empty slots.
I remember  you had more then 30 cards instead of 13.

I had 9 rigs and the pandaminer in my garage.

4 x 8 = 32 gpus  the biostar z170's and 1 asrock and 1 h81 asrock
5 x 1 =   5 gpus  the aorus


1 test rig in the basement

I sold around 20 msi rx 470 4gb cards.

I was going to add new model 500  when they come.

the mobos were paid for.

My score was  made  cause I went higher end cpus.  mostly i5 6400t in the biostar z170's

I also don't flash the cards  so I can do sky high  -ethi 22 and -dcri 45

Dumb luck really.  But  it is making and extra 125 usd a month after power.


103 for a psu.  http://www.ebay.com/itm/262772079663?   I got tons of these  with a 10% coupon
0    for risers
5   for ssd  http://www.ebay.com/itm/112143250197?  also a 10% coupon
0  for smOS  https://simplemining.net/
100    https://www.newegg.com/Product/Product.aspx?Item=N82E16813138421  some got them as low as 61 on a sale

So for now I will run 2 cards on a 4 card mobo and take advantage of the decred money


My point is  6 card boards  are not always the best way to mine.  but they can be good.

Has anyone tested an AM4 motherboard for mining yet? My main PC has one with 6 PCI-E slots, but it's my every day workstation and gaming rig, so I really don't want to take it out and put it in an open air mining frame just to test at this point. I wish I had thought of it when I first bought the motherboard. :/

There are nice looking B350 motherboards with 6 slots for $100 or less that would be great for mining if they worked. Ryzen CPUs are quite nice at mining Cryptonight too.

I went ahead and bought an MSI 370x Gaming Pro Carbon with a Ryzen 7 1700.
I went through quite a few issues installing linux. I tried with Ubuntu 17.04, Fedora 25, and Arch from April, however almost all crashed at some point due to different kernel issues during the install.

In the end, the cause of the issues was the use of the PCIe 16x to 1x riser that I used to connect my Sapphire RX480.
After installing linux, I did some testing, and this issue is present whenever connecting that card through the riser to any of the 1x slots. If I use the riser to connect to the 16x slots, the problem is not there.

Also for testing's sake, I installed Win10, and the the cards work fine using the riser on the 1x slots.

The incompatibility appears to be:
    AM4 + PCIe riser on x1 slot + linux

Unfortunately, the board only has 3 full-length PCIe slots, so it leaves me with 3 slots that cause a crash on boot with linux, so they can't be used.

The following does work:
    AM4 + PCIe riser on x16 + linux or windows
    Intel mobo + PCIe riser on x1 slot + linux or windows
    AM4 + PCIe riser on x1 + Ubuntu 17.04 w/ kernel arg acpi=off -> Only one core is visible in /proc/cpuinfo BAD

Unfortunately, I am not finding much info on the topic, probably because the board is new, and on the expensive side for mining purposes.

I am hoping to find a fix before giving up and upgrading my desktop with these parts.

Before anyone suggests differently, just using Window$ is not an option for me, because I am a bit of an open-source zealot.

The second mobo you linked, the gigabyte, I can confirm DOESN'T work with 6. I have it, and tried to get 6 working for a week, finally just left it at 5.

Hi! i will like to confirm something about this, so you already tested the x370 gaming pro carbon with 6 cards + windows and it worked just fine??? i really need to know this, where i live this mobo would be cheaper than any other option actually for mining, thank you for the testing info already ^-^

No, sorry. I only have two cards. The issues I described happened with a single card.

I can confirm up to two cards detected by Windows with risers on the 370x.

I havw a 6 slot X370 mobo in rma right now, once it comes back I plan to test it with 6 GPUs.... it may be weeks before that happens.  For what it's worth, it's a Biostar X370GT7 that had a bad bios update. :(

I also am watching this thread with interest. https://www.techporn.ph/biostar-tb350-btc-first-b350-bitcoin-am4-motherboard/ it seems that the chipset is capable of 6 gpu it might just be down to bios settings/need for bios updates on various boards.

The AB350 pro 4 works with 6 GPUs, I have 2 along with a ryzen 7 in both

Just to confirm, is it this motherboard? --- https://www.newegg.com/Product/Product.aspx?Item=9SIA85V5J87066&cm_re=AB350_pro_4-_-13-157-761-_-Product --- Does it work out of the box with 6 GPUs or did you need to adjust any specific Bios settings? Thanks :)

Any word on the x370?

I bought MSI x370 and successfully detected four GPUs but can't get the 5th to light up.

Curious if there is something I can do in the BIOS to get it to work or if this board might only do four and that's that.

Thanks.

Actually...

Went into device manager and found a device in "Other Devices" that had no driver but was labeled as a VGA card. I right clicked to properties and clicked "update driver" in the dialog box. I let it search for the driver and it installed it all by itself.

Restarted windows and now I have FIVE GPUs running on MSI x370.

I wonder if a 6th will work at this point :)

To answer the OP:

ASROCK AB350 Pro 4 - Craps out after 4 cards. Will POST, but Windows won't complete boot. Tried using M.2 adapters and everything, but it didn't work. Maybe in the future with bios updates.

Gigabyte AB350 Gaming 3 - 5 cards works without any trouble. I have an M.2 SSD in place, so I can't test 6, but I suspect it will work.

ASROCK x370 Fatal1ty Gaming K4 - 7 cards works, 8 won't POST (using M.2 adapters). It's a bit picky about connecting cards - Turn off the power supply when connecting a card; don't just shut the machine down. If it won't boot after adding a card, turn off the switch on the PSU and clear CMOS. That usually fixed it as I added the cards 1 by 1 until I got 7 installed.

The Gigabyte was by far the easiest to get booting and working. If you're looking for a cheap board, it's not a bad choice. The Fatal1ty is nice overall, though. CPU overclocking is far better, the two M.2 slots is nice, the extra mini M.2 for wifi is nice and the sound card is great as well.

I confirm this too, tested and working with Ryzen 5 1400.

I had no issues getting the AB350 Pro 4 to detect and mine with 6 x GPU's running EthOS.

ASRock Fatal1ty AB350 Gaming K4 is capping out at 3 GPUs for me under Windows 10... Tried adding 1 card at a time with full power off and CMOS clear between each card but at 4 cards, 1 of them will fail to detect correctly and only 3 or even only 2 will be able to mine. Occasional BSOD with 4 cards, 5 cards is nearly a guaranteed BSOD or a laggy and unusable windows until a BSOD within a minute after booting.

No PCIe options in BIOS, page file increase made no difference and extra ram made no difference.

Was testing with a sata connected SSD and tried multiple clean installs of win 10 with nvidia drivers 368.81, 375.70 and the latest 382.53 with the exact same results.

The 5x V006 PCIe riser boards didn't even power up the GPU's (tried direct 4pin molex and sata to 4pin adapters and even new USB cables) so i suspect that entire batch was faulty but the V007S ones all worked without issue.

Gave up and resorted to SimpleMining (SMOS), first boot with all 5 cards connected and been stable and mining at 130MH/s for 12 hours now with 5x GTX 1070's... Sadly they are only at the stock 26MH/s and not the 29.5MH/s i was able able to push them to in windows as the overclock function in SMOS does not work with the nvidia build.


tldr version, dont get the ASRock Fatal1ty AB350 Gaming K4 for windows mining...

I have the asrock ab350 pro4. it worked perfectly with 6x rx580 in windows10, but will fail to install drivers for 4th card if you're using nvidia gpu-s.
so I can recommend for amd mining, but not for nvidia. maybe in a future bios update..?

I could not get past 4 cards
Did you change anything at Bios?
If yes, could you tell us what has changed?
I thank you

I couldnt even get 3, 2 works, 3 fails, and have to start over at 1.

Not that I remember, it was quite a while ago that I set the board up though.

It has 5 x GPU's running without issues, and I expect it would do 6 if I had a PSU here to support adding a 6th GPU.

Asrock AB350 Pro4: I have the same issue with Nvidia cards and Win 10. Got stuck when installing the 5th card. I even purchased the second board thinking the first one had an issue lol.

Much appreciated if someone comes with a solution ;D

I actually have a B350-BTC where I'm fairly certain I'm having the same riser issues as you.  Curious where you got your batch of V006 risers from, and where you ordered the working replacements.

I have a new set on the way of 006C's as well to try, but wouldn't mind stocking some known working spares to have on the way just in case.

Asrock AB350 Pro4 windows 10 using nvidia cards with ver 006c risers  4 cards work fine add a 5th and windows will not boot...

How did you make it work? I bought this mainboard and CPU, but it will only see the first GPU. I did not see any option in the BIOS to let me use the other cards for compute only, or enable them in any way.

Bump, hoping someone can post back about 6 GPU's on this board. Cheers.

Well I can confirm that 5 gpus  (1060's) on powered risers work in the ab350 pro4 and Windows 10. No bios settings helped but a few of nvidia driver re-installs and trial and error got it going. To outline the process I used and re-did a few times to make sure...

(note: best to start with no drivers installed so clean that up first)
(note2: Windows 10 worked Windows 7 didn't although I didn't try this method as long on Win7)


1. cards in risers for slots 1 and 2
2. boot and install drivers
3. restart.
4. shutdown
5. cards in risers for slots 4 and 5
6. boot and make sure all 4 appear under display adapters with 2 showing warning for needing a restart
7. reboot to make windows will boot with 4 cards recognized.

The last one was tricky and took a few tries to be honest.

8. card in riser in slot 6.
9. during the boot and after the windows logo appears and the bubbles are circling below , unplug the usb from the adapter that is in slot 6 and let it finish booting to windows.
10. look in the device setting again and you should see a 5th entry in display adapters with a warning like in step 6  or a new entry under "other" for a VGA adapter.
11. plug the usb back into the adapter and in device settings "re-scan for changes" and make sure a 5th entry is still under display adapters.
12. restart and you should be good to go with 5...which is better than 4  8)

Hopefully this all work for someone. It took me 3 iterations of complete driver uninstalls and re-installs to get it to where I could consistently

I can overclock all cards with MSI afterburner and my eth miner has been running for +24 hr at this point.

I might work on getting the 6th card going but that 3rd slot really doesn't seem to want to work.

Thanks for the update!!!  I will try this when my new risers come in.. Keep us updated if you get that 6th card to work.   

Update from me, I have been successful with 6x RX570's in this board but I cannot get any version of nvidia drivers to allow 5 (or 6) to boot into Win10Pro.

I believe given this it is 100% a driver issue and possibly just a matter of hitting the right one to get 6 nvidia cards into Windows.

Nvidia update driver,latest from 29.

Spent a little time trying to get 6x 1060's going but nothing seems to work. Updated to the 6/29 drivers and couldn't even get 5 to go. the 382.53 is what i'm using and 5 work just fine.

No need to search for motherboards anymore I guess. Biostar is ready to ship their new TB250 Pro Btc with 12 slots for  GPU-s 1 PCIEX16 3.0 and 11 PCIEX1 are ready. You can buy one from ebay from this link. It's a shame I bought a few months ago 2 TB250 Pro btc with only 6 GPU-s each.

Here is the link
http://www.ebay.com/itm/Biostar-TB250-BTC-PRO-Ver-6-x-Socket-1151-Motherboard-pre-order-/282549224362?epid=0&hash=item41c93f03aa:g:h6UAAOSwVJhZR6NJ (http://www.ebay.com/itm/Biostar-TB250-BTC-PRO-Ver-6-x-Socket-1151-Motherboard-pre-order-/282549224362?epid=0&hash=item41c93f03aa:g:h6UAAOSwVJhZR6NJ)

Biostar TB350 BTC, AM4 motherboard has been fairly easy to setup here so far, a pair of rigs running now with 6 GPUs each and we have 3 more being built atm.

I think we can use this mobo with 6x GPUs and ryzen 1700x to mine by both GPU and CPU, is it more profitable than 6 GPUs and a much cheaper CPU to mine by GPUs only?

 

you think it might work with 2 amd and 4 nvidia cards?

Thank you soo much. Im currently running with 4 1070's going nicely. Just need to pickup a new USB 3 cable today and will try that elusive 5th tonight :)
Current setup is :
Asrock B350 Pro4
R4 1400
A M.2 SSD in M2_2
4 x GTX 1070's
Corsair AX1000i
Windows 10 Pro x64
Nvidia Driver version 382.53

Any of the Ryzen CPUs can mine enough to pay for their cost within the first 6-12 months. I'd go for the cheapest model that had the number of cores you want though, so for a 8 core Ryzen I'd get the 1700 at ~$300. We're running R5 1600s on 5 of our mining rigs and they can all do ~450 hashrate on Monero, which is good for $1/day right now. There are other more profitable CPU minable coins too, some twice as profitable even. :)

fine, i'd like to build a ryzen1700+8GPUs rig.

It was an eBay seller in Australia that listed them as local stock but they came from China and i had to email them a video of the fault to resolution@banggood.com or supentres@enjoyebgo.com...

I got my working 007S's from this AliExpress seller - https://www.aliexpress.com/item/VER-007S-PCI-E-PCI-E-Express-1X-to-16X-graphics-card-Riser-Card-SATA-Molex/32779942085.html

Just a quick update on this in case anyone else if having the same issues - Swapped the motherboard over to the Biostar TB350-BTC, selected the "Mining mode" option from BIOS and all good on first boot. I didn't even reinstall Windows or drivers. just unplugged all components from the Asrock, plugged into Biostar and mining away - stable for 5 days now.

Got my Biostar board from this AliExpress seller - https://www.aliexpress.com/item/Free-shipping-TB350BTC-original-TB350-BTC-Socket-AM4-Motherboard-for-Bitcoin-AMD-Ryzen-CPU-B350/32813417900.html

For the guys that had 6 RX cards working with the Asrock AB350 pro4, was there any BIOS settings you guys messed with? I cant get 6 to work in windows 10 but 5 works.

I did not see any settings in the BIOS (P2.6) that could effect anything with pcie.

Thanks

I actually find it easier with the stock BIOS they seem to remove an entire section of control in the 2.6.

https://i.imgur.com/WhnYDBcm.jpg (http://imgur.com/WhnYDBc)

this entire AMD PBS section which includes the PCIe control is removed in 2.6.

How do you make GPU and CPU mining at the same time? Care to share any tutorial? Thanks!

Why anyone would buy some of these boards is beyond me when rigging a Z270A with M.2 and PCIE multipliers gets you at least 11 GPUs for cheaper is beyond me.


1. Run GPU miner
2. Run CPU miner
3. ???
4. PROFIT!!

Hi guys,

I want to share that I got the 6 RX 470 cards working! Now getting them running on rig 2 is the problem child.

Here is what seems to work:
Asrock AB350 PRO4 w/R5 1600
Bios 2.6 (F9 load UEFI Defaults - done, no need for anything else)
-
I installed Windows 10 PRO with one video card on the native PCI-e Slot, installed drivers, etc. I did not install windows updates.
-
I then assembled the system (miningrigs server chassis) but all as mentioned the 6th card caused a boot loop so I am suggesting this below if your 6 cards dont work off the bat.
-
Install the main GPU with riser and boot to windows. Install one card at a time until all cards are working. When I get to desktop I right click on the windows start icon on the lower left of the screen, select device manager then look for the "Display Adapters" tab and make sure all cards are listed there without an exclamation mark.
-
If one card does not work tips:
-If a card fails to recognize remove it and boot the system in the last known working state, even if that is one GPU. Then add cards back one at a time.
-Kill power to the power supply when making changes to the hardware
-Disconnect your internet connection during this process
-DO NOT BE SURPRISED TO HAVE MORE THAN ONE BAD RISER
-WRITE THINGS DOWN
-I think a lot of the issues is that once a bad riser is introduced it freaks out windows. On rig two I have had 2 bad risers but each time I narrowed it down I needed to go back to one gpu and work my way back up slowly till I got now 5 gpu mining. Swapping risers now for the 6th one and hopefully that one will be at 6 too.
-Consider reinstalling drivers BUT uninstall drivers with a program called "Display Driver Uninstaller" or "DDU" which guru3d hosts the download. I prefer uninstalling drivers if the system doesnt come back to a known good working state. I also use the safe mode setting in the program.
-BE PATIENT

I think that sums it up for my experience. I think the main issue is that there is a high failure rate on Riser cards and if one part of that component (I even had a bad USB cable on one) it freaks out Windows.

Good Luck
-Anthony

Yes, I would agree that riser cards (and their cables) have a much higher failure rate (or are doa to begin with) then any of the other components in a typical mining rig. We try to order an extra 20-25% for our past few orders of them and only buy the good ones from reputable places (if you can find them in stock).

Could not agree more. I am building these systems for a client and ordered an extra 5 of them.....Yeah RIG two looks like it will end up using 3 of these new backup ones and I still have two more 6 gpu systems left lol. I believe it was the owner or just an employee of miningrigs mentioned they had some models in the past that had as high as a 50% failure rate! Man I just wish we could get some reliable ones.

I am an experienced System Builder (SI or whatever the acronym someone is used to) and boy troubleshooting takes time. I dont know how someone doing this without or with little system experience handles this.

Thanks! Could you also share the cpu and gpu miner names? Don't they fight each other for cpu?

I am glad it worked for you, i have tried everything with no luck. sometimes it is hard to get more than 3 1070's  to work....     

I can confirm that Asrock ab350 gaming k4 can handle 6 GPU. Mine is 4 480 and 2 570.

Hello everyone. I have ASRock AB350 Pro4 and 6 GTX 1070 . But only 4 work`s right now. Bios is 2.6 and i also haven`t any settings for pci-e devices like Above 4G etc. Help me please , what i`am doing wrong?

Windows 10 Pro
Nvidia latest drivers, without GF experience etc. Only driver. Windows is UEFI .

My problem is black screen after more than 4 GPU`s inside.  :-[
Thanks everyone.

would you mind trying a linux boot disk (maybe a mining distro) to see if all the cards work that way?

Ok, i will try. Could you advise me mining distro for ETH ? Thx

Pimp supports nvidia, IIRC; not sure about ethos.

MSI X370 will do 6 Nvidia GPUs, but it is difficult depending on your version of Windows 10 (build version).  My OEM Win10 disks were build 1507 (I think).  Lots of errors, restarts, was driving me nuts.  And that is after I installed the AMD newest chipset drivers.  What's more frustrating, is that Windows Update just crashes and fails over and over with this build version - just doesn't work with Ryzen.

Download Microsoft's "Media Creation Tool," download to ISO and make a USB boot stick (search for "Rufus bootable .ISO"), do not use the Microsoft product, just download the .iso image and use Rufus to make your Windows boot USB device.  This will take a long while to download and run through updates.  Then reinstall Windows10 using the USB stick/key only this time it will be build 1511.  Start the build with one Nvidia card in the main slot.  When you get to build 1511 (and before you install lots of software), make sure the one card is recognized and that you can mine.  You need to then launch DDU and remove all drivers and shut down, not restart.  When shut down, plug in all your other cards.  Reboot.  If Windows doesn't install the drivers, do so manually under Device Driver.

If you errors on startup, hit F11 to get to the Boot order menu and click on wherever you just installed the new version of Windows.

Beware the Microsoft Update Assistant (Blue icon) that comes with build 1511.  Takes forever and it *may* update you to the 16xx build, and if you run it again, it *may* update you to 170x build.  But you'll probably tear your hair out first.

Go to "PC Settings" > System > About: to see what build you have.  If you have build 1507 or lower, that might explain all your problems.  Update to at least 1511.

Disable Hi-Def audio in Bios.  Disable Serial/Parallel I/O.

I think, more than anything else people mention, when it comes to Ryzen and 5/6 GPUs, it is a Windows issue.

These are some very useful information and I totally agree with the windows issue conclusion! Thanks for sharing.

I also have this board, and I am able to run 4/5 gpus' on it.  I'm also running 2x hx 850 watt gold rated power supplies.

Working GPUs:
2x gtx 970
1x 1060
1x 1080

Recognised, but not working (yellow triangle)
1x gtx 970.

Before I had the 1080 put in, all gtx 970 were working.  Now I have the 5th card recognised by windows, though there is a yellow triangle and no explanation why this card is being disabled by windows.

Anyone have an ideas about have yellow triangle? I'm going to try a third riser on the board to see if i have 2 bad ones. Seems to me that if there was a bad riser that the card wouldn't recognise in windows.

I also learned that USB 3.0 extension cables do not work with pci-e risers.

If it worked with 5 before and windows is detecting 5 still in Device Manager you probably just need to uninstall drivers with DDU (in Safe Mode) and then reinstall your drivers. Hopefully that will have all 5 working again.

I didn't have 5 cards before. I had 4 cards running previously, now that I have 5 I was hoping to get them all to work. Even though window's sees 5, one has a with triangle on it.  The triangled card is was also working previously.

Driver's were reinstalled with DDU in safe more many times.

I also just installed Bios version 3 too.  I'd have to say that installing all of your cards to the mobo, running DDU, then doing a bios update was the easiest way i had to get these cards recognised without doing some monkey work.

Any other suggestions for this last GPU?

Well, the vast majority of motherboards won't run with more then 4 GPUs, many can't do more then 3. If you want a dedicated mining rig I would suggest buying a dedicated mining motherboard, such as the Biostar TB 250, TB350 or TB85... they're made specifically to mine with 6 GPUs and will be far less of a headache for you. :)

ROmi,

Which x370 motherboard do you have exactly and what BIOS version did you get it to finally work with?

Thanks!

Hey, people, Im posting this as I finally got working 6xGPUs on a Ryzen mobo on Windows 10 and I believe it can be useful to others that like me were struggling to achieve this.

System: AMD Ryzen 7 1700
MSI X370 SLI Plus with latest mobo firmware
6x ASUS Strix GTX 1070 non-OC version but OCed (Mem clock @ 8723 Mhz, Core @ 1903 Mhz)
Corsair 8Gb 3200 Mhz RAM
PSU Seasonic X-850 Watts 80+ Gold x2 (3 GPUs on each PSU), second PSU with metal clip power-on method.
Windows 10 Pro updated to latest everything

A little history first:
I tried every combination of slots and risers, they all work independently and up to 5 GPUs using the latest Nvidia driver (384.94) with Windows 10 booting up and hashing Zcash with EBWF with no problem. But no matter where I put the 6th GPU, whenever I did, Windows would not boot and would enter a loop where eventually the error repair screen appeared.
If I booted to safe mode, Windows showed the 6 GPUs on device manager, but the driver wouldn't be loaded so I couldn't mine with it. When doing a DDU driver uninstall, booting to normal mode worked and Windows would show the 6 GPUs on device manager but as Generic display cards, not being able to mine of course.
So I bought ethOS and after the initial learning curve, got all GPUs to mine but would constantly have random crashes that didn't lock the GPUs but were very annoying cause I lost hours of possible mining (which translates directly in loss of revenue). Because I didn't want to open a port on my router to access the rig remotely, I used Teamviewer on a second machine that mines in Windows at a very lower rate (2x GTX 980) but super f***ing stable (not a single crash ever, even on overclock, against the 2 crashes per day of ethOS, even on non-OC settings) that allowed me to access the linux rig on the local network.
Still, I wanted to mine on Windows so that I can 1) have rock-solid stable mining and 2) be able to use Teamviewer to manage the rig as if I were sitting right in front of it.
Checking the main panel on ethOS I noticed that the GPUs were listed as 21-22-23-24-26-27, missing the "25", so I thought that maybe the sequence of population of the pcie slots might have something to do with it.
In the mobo, the slots go from top to bottom: x1 - x16 - M.2 - x1 - x16 - x1 - x8
So I bought an M.2 to PCIe x4 adapter to add a 7th GPU, because whatever and for some reason I thought "why not try it on Windows?". So I set it up as following: x1 / x16 / M.2 / x1 / x16 / x8 and turned it on....
And that motherf.....g Windows just booted right up, loaded the OC config with GPU Tweak II and started mining like a devil at 2830-2850 Sol/s. Freaking beautiful.
So, 6 GPUs on X370 ON Windows 10 is absolutely doable.
I hope this helps others.

I can submit pics if needed

Later.

Edited: cleaning text, spelling, typos and stuff...

Hi,

I have the MSI X370 GAMING PRO AM4 AMD X370 SATA 6Gb/s USB 3.1 HDMI ATX AMD Motherboard.

Bios version:  E7A33AMS.430 (file name: 7A33v43)

Windows 10 *** build 1511 ***  Build version matters.  1511 is rock steady, so make sure to block Windows updates.  I am not using the M.2 > PCIe adapter but that is an interesting idea.

I actually use the M.2 slot for an Intel SSD to boot Windows, but I would recommend just going with a cheap small SSD driver and trying the M.2 > PCIe trick discussed above.

Sorry, to be clear: it IS running 6 GPUs and works very well.  Not 4, not 5, but 6. 

Romi,
That’s awesome information, thank you sir! I also have the MSI X370 Gaming Pro. I tried with BIOS E7A33AMS.430 and the new E7A33AMS.440. The new BIOS has the option for cryptominig however, it doesn’t seem to affect anything except it no longer displays POST and you can’t seem to get back into the BIOS without clearing CMOS.

Anyway, can you please explain how you are installing the drivers exactly. I have followed your instructions and I can get Windows to recognize the 6th finally after running DDU. I then tried to install via the nvidia package (v385.28) in normal (not safe) mode.  It seemed to install but when I rebooted windows puked and entered a reboot loop and tried to repair itself. Any ideas?

BTW, the slot that sends windows into the repair boot loop is the very bottom PCIe 4x slot.

Thanks!

After spending far too much of my life on this I found this thread.  So I decided to post my story.

I have an asrock ab350 gaming k4. I have a mixed rig. I had 4 1060s and 2 580s to put me under my 1000w psu.

I originally bought two of these rigs.  My first had no problem with 5 gpu and is still running 5.

The second rig I fought with.  And fought.  And fought.  It was 3 months ago so I don't recall the details but I believe  I was able to get 6 cards running by installing drivers one by one and mucking with slots. After it was running it was totally stable and never did the black screen booting windows ->recovery. . 

Last week a fan died in the second rig and I swapped a 1060 with another 1060.  Nothing else changed and now the machine will not get to windows with more than 4 cards. I had forgotten about the initial pain of setup and now I'm pretty pissed. 

However, I did have  a m2 to pcie card laying around. So props to the previous post about trying that. I originally stuck it in m2_2 -and windows didn't see the card.  So I tried m2_1 and moved one gpu out of pcie 4. Now I have 5 cards running.

Later, I might try to get the 6th working.  I'm thinking if I boot to safe mode and install the drivers for 6th I might be able to get it going. 

Being excited about 5 cards working, I tried connecting the 6th and going to safe mode to install drivers.

All 6 cards are shown in safe mode with no cards needing drivers.  Yet booting windows normally fails. 

Not even sure what to try now.

Linux!
Sorry I couldn't resist :-)

I tried simple mining os to see if it would work and couldn't get it going.  Plus it doesn't work with mixed rigs

Romi,
That’s awesome information, thank you sir! I also have the MSI X370 Gaming Pro. I tried with BIOS E7A33AMS.430 and the new E7A33AMS.440. The new BIOS has the option for cryptominig however, it doesn’t seem to affect anything except it no longer displays POST and you can’t seem to get back into the BIOS without clearing CMOS.

Anyway, can you please explain how you are installing the drivers exactly. I have followed your instructions and I can get Windows to recognize the 6th finally after running DDU. I then tried to install via the nvidia package (v385.28) in normal (not safe) mode.  It seemed to install but when I rebooted windows puked and entered a reboot loop and tried to repair itself. Any ideas?

BTW, the slot that sends windows into the repair boot loop is the very bottom PCIe 4x slot.

Thanks!
[/quote]

Sure, here is how I do it:  I launch the Nvidia installer and let it go through the part where it checks my system, then I hit the "agree" to all the licensing restrictions.  THEN I QUIT OUT OF THE INSTALLER.

At this point, there is an "Nvidia" folder created on my C: drive.  You may want to rename it to something like "XNvidia."

I then go into windows Device Manager (after running DDU to wipe out all prior drivers) and manually update the driver for one of the generic Microsoft Display Adapters.  After I update one card, after a few minutes, Windows tends to update the rest and I am good to go.

Pictures on what I mean by "manually' update the driver in Device Manager:

http://imgur.com/a/KHFoD (http://imgur.com/a/KHFoD)

1. Browse to the "Nvidia" folder on your C:/drive.

2. Go to the version/international/driver/display.driver/  

3. then click on the file "nvaci" and hit "Okay"

But make sure you are using Windows 10 build 1511.  If you are on build 1703, this probably won't work.  I have no idea why, I'm just telling you what worked for me.

Good luck.

What build version of Windows 10?  1607?  1703?

Go to PC Settings:System:About  to find this information.

6 works with build 1511.

Not sure what was on before I reinstalled, currently it's on 1703.

Is 1511 easily obtained on Microsoft site?  Or do I have to search the underground for it?

Edit - the rig I have 5 gpu working is 1703.  The machine I had 6, but now only 5 is 1711

This is exactly what happened to me! Now i am going to try that m.2 trick too. Will keep you guys updated.

Update: Finally made it work. Not by using m.2. Just switch the pci-e slot and finally find one combination works. What a day...

Do you recall what you changed?  Did you just swap cards in random slots until it worked? Were you installing drivers? And did you get 5 or 6 working?

I do plan to get ryzen mobo for my mining rig, so that I can mine with cpu too on some cpu-only coin. But too bad that it is hard to get more than 6 pcie mobo for ryzen.

I currently have Ryzen R7 1700 on MSI B350 Tomahawk.
Able to run 4 GPUs succesfully:
2x RX 460 4GB
1x RX 570 4GB
1x RX 580 8GB
 on 750W PSU.
I tried installing m.2 to pcie adapter and put riser on that adapter, and tried installing the RX 570 4GB on that riser.
The Riser USB cable get hot, the GPU fans run full speed, and windows didn't detect it.
I hope one can enlight me what to do.
Hoping to squeeze another RX 460 4GB in the system.

I got a Gigabyte AB350 pro gaming with ryzen 1500x, it was utter bitch to get all the cores working on linux, some gigabyte apic bullshit that was fixed in kernel 4.12.9 so I had to use fedora 26 and compile shitton of stuff myself to satisfy old dependencies of miners I use. I wouldn't recommend it to a newbie. On the bright side I'm doing 500 h/s on monero with cpu alone.

https://i.imgur.com/N5JaOCE.jpg

MSI released a new bios to support "above 4g decoding" that may help to recognize more gpus.

for which board?
I want to get the MSI X370 GAMING PRO CARBON for 4x Vega 56 and possibly 6 pieces later

who can confirm that the board can handle 6 GPUs?

Hello,

I had previously written on this thread that I could not get the MSI X370 GAMING PRO CARBON working with more than 1 card, or even 1 card in some situations.
My problems disappeared when I disabled IOMMU in the BIOS. After I disabled the IOMMU in the BIOS, everything worked correctly, no more kernel issues, and I have been running it with 4 cards for a few months now.

NOTE: It is a gaming oriented card, and has a high power-consumption. This makes it less than ideal for mining, but it gets the job done.

ASRock Fatal1ty AB350 Gaming K4
Ryzen 5 1600
2 x 4GB DDR4
3 x MSI 1060 3GB
2 x GIGABYTE 1060 3GB
1 x Inno3D 1060 3GB
Windows 7 Ultimate

6 video cards DO NOT work on ASRock Fatal1ty AB350 Gaming K4, at least on Windows 7 and 10.

I tried a lot, but managed to make 4 GPU rig on this board, which works like a charm with 385.69 NVIDIA driver.
AMD 16.50.2601_Allin1 drivers (USB, etc.) aren't installed.
Almost everything disabled in BIOS.
BIOS updated to 3.20.

If I put GPU into any of last PCI slots, Windows won't start. It doesn't matter, whether one GPU is installed or four. Just put additional GPU into one of last PCIs and Windows won't boot.

In safe mode Windows shows 6 GPUs, BTW.

I have 2 X of the Fatal1ty AB350 Gaming  K4.  Great boards, easy  setup, however I am unable to get either one to recognize more than 4 GPU's.   I have 4X 1070's on one and 4X 1060's on the other.  If I add more it just gives me a black screen and reboots every minute or so. Happens with both. Using Win10 Pro, 16GB RAM, 2 TB HD, Ryzen 1500.  I have no solution yet as I haven't had time to test.  Yes, adequate power supplies!

Nothing really changed. I just swap the original slots for these cards. Seemed to me that Windows remembers things and it is determined sometimes. You need to force it to re-remember. Now I got 6 working and it is stable.

ASRock Fatal1ty AB350 Gaming K4 CAN have 6 gpus for sure. Make sure you leave one on the mb on the primary pci-e slot.

Tried. It didn't work out.

Actually I see no difference, whether to plug GPU into MB slot or riser. Whenever I plug GPU into two last PCIs, Windows sucks – that's the problem.

Are you using any m.2 device? It will disable one pci-e on the mb. But anyway, just keep turning off psu, turning it on, and turning on the rig for few more times. You will have a good chance to get in windows and see what going on. Update to the lateset version of windows too.

Tried Windows 7 and 10.

I have 1000 W Chieftec PSU, which is more than enough.

I do not use any m.2 devices, usb flash drives, etc. I turned off everything in BIOS (latest 3.20). MB + CPU + RAM + 160GB HDD 2.5" + DVD-RW + PS2 keyboard - that's all.

After pluging GPU into 1 of last PCIs Windows won't boot – black screen and system restarts. Then Windows tries to make Startup Repairs or System Restore.
Windows showed 6 GPUs in Safe Mode, but it won't boot normally with 6 GPUs and even with 2 GPUs when 1 of the GPUs is plugged into one of last PCIs.

I didn't install AMD 16.50.2601_Allin1 drivers, because with them Windows doesn't start correctly with 4 GPUs. For the time being 4 GPUs work perfectly.

I got the board yesterday and can't get more than one to work. Have also tried the latest BIOS and Beta BIOS with 4G decoding etc. but nothing works.

I also made your IOMMU settings, even without success.

Please ask for help:)

thank you

I didn't quite understand what to do.
I delete the VEGA driver with the DDU, afterwards I leave 1 or more cards connected?

which bios exactly do you mean, the final version or the beta?

What does "it doesn't work" mean? Are you booting Windows or linux? What error do you get?

Update: as I posted earlier, I couldn't get more than 5 working in my asrock. When I put the 6th in it would reboot. I thought on a whim I'd try a different card. So the 1060 wouldn't work but for some reason a 580 magically does. 

All Windows 10...

I have GIGABYTE AORUS GA-AX370-Gaming K7 AM4 running with quantity 6 of GIGABYTE GeForce GTX 1070 8GB WINDFORCE.  Total pain but working.  I’m not sure why it was such a problem but I was reinstalling drivers several times.  5 GPUS wasn't a problem but the 6th one was terrible to work with.  When I reboot one of the cards goes away.  I even tried a converter in the M.2 slot to see if that would work better but that didn’t work at all (unknown if adapter is good...otherwise untested).  This particular motherboard manual doesn’t mention deactivating any slots like some do in sharing PCI-E lanes.  I learned if I install the driver again while in Windows and then start mining without a reboot it works fine.  Device manager actually shows 6 cards functional this way instead of the 6th card with an exclamation point.  It's been stable so far for a couple days.  I imagine when I reboot I'll need to just reinstall the driver again so Windows sees the 6th GPU and then start mining.  I do NOT uninstall the driver first or use DDU when getting this to work.  Tried that several times in the beginning with various driver version and it never worked that way.  Unsure what's going on exactly and why it won't keep the 6th card on boot without basically overlaying the driver on itself again with a reinstall.

Also have MSI X370 GAMING PRO CARBON AM4 running with quantity 6 of Sapphire Radeon NITRO+ RX 580 4GB.  Not too difficult at all.  It has a BIOS option for “Above 4G memory/Crypto Currency mining”.  Pretty cool to see that feature in a BIOS.  Unfortunately when I select it that system won’t even post.  But no problem with BIOS defaults.

Will be testing a ASUS ROG STRIX B350-F GAMING AM4 soon.  Hoping to get 6 of the MSI RX Vega 56 going.

We have almost 10 of ASOS ROG STRIX B350-F cards and Ryzen3 1200. We had some initial issues, but after flashing the latest BIOS we could just use default settings and 6 GPUs would work every time, no hassles.

Why connect 6 GPU on the new hardware? For this money you can buy 4 old comp and 2 server power supply for additional power to the GPU. This will allow you for the same money to connect to the work 12-16 GPU. In order not to spend extra money you should always calculate the options with second hand equipment.

Thanks.  I can confirm I also had great results with this motherboard paired with a Ryzen 1300X.  6 RX Vega 56 GPUs up and running with no problems at all.  Started with the latest BIOS.  Easiest build yet.

Modern hardware works better, than old. With new hardware there is less headache, IMHO. Also u get warranty and support of all modern technologies. It's hard to find old quality hardware for decent price.

Need an 8 card ryzen board anyone find any that works with 8?

MSI X370 Gaming Plus
A8-9600
4 GB 2400
160 GB
1000 W PSU
1060 3GB MSI
1060 3GB MSI
1060 3GB Zotac
1060 3GB Inno3D
Win 10 Pro 1703 (lower builds cut hashrate)
Above 4g decoding enabled
UEFI boot enabled
7A33v54 BIOS
No issues with risers or gpus.
Wanted to make 5 gpu rig.

According to MB manual it can support 6 gpus with M.2 adapter, but I managed to run only 4.

1) When I put 3 gpus in slots 1, 2, 3 system starts with no problems.
When I add gpu to slot 5 or 6 MB won't start.
2) If I put 4 gpus in slots 2, 3, 5, 6 system starts with no problems.
When I add gpu to slot 1 MB won't start.
3) Slot 4 don't work at all as stated in MANUAL.
Please, refer to pages 28-29 of MSI X370 Gaming Plus MANUAL.

What am I doing wrong?

Quantity 6 AMD RX Vega 56 confirmed working on ASRock X370 Killer SLI/ac AM4 AMD Promontory X370.  More trouble than other motherboards I listed before but nothing terrible.  Had to DDU/reinstall drivers a few times before it took with all 6 GPUs on my base image SSD.  Worked once I "express" installed the AMD driver back on top of itself again after an initial DDU and re-install.  I've frequently had troubles with Asrock boards in the past (bad voltage regulators in old ones) but don't want to assume it more than a fluke.  We all know how AMD drivers can be.  Working fine for a couple days now.  Nice to have wifi onboard if needed and the price is right for the features.

Try without the 4g decoding enabled.  Especially since you don't have 6 or 8GB gpus.  I had nothing but trouble with this.  Mine won't even post with that option enabled. I'm using the similar MSI X370 GAMING PRO CARBON AM4 AMD X370 and have multiple of these.

Hi,

How do you manage to get full hash power from all of your Vega without an iGPU to plug your hdmi dongle/monitor ?
I'm asking because when I plug my dongle on one of the Vegas, its hashrate falls by few hundreds h/s (1600 instead of 1900), and that's what keeps me away from Ryzen so far.

Hi,
I managed to get the MSI X370 GAMING CARBON with 4GPU VEGA 56.
I want to upgrade now my configuration, i will try for sure give a try with 6GPU, but i wonder anyone try with more GPU? (i don't find the detail of the motherboard GPU limitation)

Tried. It didn't work out. If I turn off Above 4g decoding enabled, Windows won't detect 5 GPU.
I managed to run 5 GPUs on MSI X370 Gaming Plus, but this shit won't mine at all. Now I used M.2 adapter LM–141X–V1.0 for  5 GPU.
Windows 10 detected all GPUs, installed drivers, but systems stops working after few minutes of mining and reboots. Claymore miner constantly restarts on single M.2 adapter GPU.

Yes, I have that board and it works fine with more than 4 Vegas.  But I had to update to Fall Creators Update from the Windows site (1709).  And I never enable 4G decoding on these MSI boards.  You need 4G enabled on the Asus boards, but on the MSI X370, I don't know what the hell 4G does expect cause headaches.

Hi guys. I have asus b350f gaming. It doesn't work more than 4 gpus with ryzen 1800x. Is there any to work? I updated bios and drivers.

1. ASUS STRIX B350-F GAMING?
2. What OS? Install Win 10 1703
3. Look into manual on GPU slots

1. Yes. Strix b350-f gaming
2. Windows 10 pro but i don't know 1703?
3. I try a lot of times. I bought a new psu today. I will try tonight.

Hi,
I finally upgrade my rig with x370 carbon and 4 Vega 56 and add 2 Vega 64.
I struggle a bit to get it working. Now every card are up in windows but I managed to get it working only with 5 Vega.
Indeed, the Vega which is on first pcie x16 port getting freezing the computer when I compute with it. And this is a new Vega 64 which I bought.

What do you think? IS it the new Vega 64 that is break or this is the fact to run on the pcie x16?
(I can still return the card and get refund, and I don't have an extra riser to try..)

I bought a new usb riser and my rig is now stable:
x370 carbon with 4 Vega 56 and 2 vega 64

What's screw me up for a a couple of night was to use the the pie x16..
With plugging all cards on usb risers it works nicely. (from drives installation to reg optimization)

anyone here who can help me.

im using asrock ab350 pro 4.

i have a 1070ti at pcie 3.0

trying to plug in a 1060 on the other pcie 3.0 slot

but after that my windows can only detect the 1060?

do i need to use riser for this to work?

tried reinstalling the drivers

I am trying to build a rig of 6 RX570 on ASRock B350 Pro4 (with Ryzen 3 1200).

Ubuntu 16.04.3 doesn't boot when even just one card is connected with riser. Fails with kernel panic. Both live-usb and installed without connected riser.

On Windows 10, 5 cards are working good.
But the 6th card (that is connected to second PCIe x16 with riser) isn't detected properly most of the time (like 4 in 5 boots). And even when it is detected, after some time of miner running, pc freezes and that's it.
Tried to swap slots, and the problem seems to be in second PCIe x16 slot.
Tried different BIOS versions (http://www.asrock.com/mb/AMD/AB350%20Pro4/#BIOS): 3.20 (stock), 3.30, 4.40, 2.50. Same shit.
On 4.40 the AMD PBS section appeared again (mentioned in the thread before (https://bitcointalk.org/index.php?topic=1814199.msg20002079#msg20002079)), I tried to switch to 2x8 mode, and that gave me 5 short beeps and black screen (no signs of boot) if there are cards connected with riser.

Notes:
1. Cards are with hacked bios (https://bitcointalk.org/index.php?topic=1954245.0). All are working fine, tried them on another working rig.
2. One card is connected directly into the first PCIe x16, without riser. It's just more convenient. Pity if that's the cause of the problem.

Any ideas how to make 6th card work stable?

Missed this one. Will try m2 > pcie adapter.

Hi,

Can i add 2 gtx1070 Ti (for mining) to a Gigabyte GA-AB350-GAMING 3 ( on the 2 others PCI-E 3.0 16x ports, without risers) when i have already 1 gtx 1070 Ti in the first PCI-E 3.0 16x port (for gaming) ?

Or do i need absolutely risers for those 2 cards ?

Thanks in advance

No.

Risers are needed either for pciex16 -> pciex1 transition or if directly installed card blocks another slot.

If you can install 3 cards in 3 slots directly, do so. It's probably even better.

Thanks !

M.2 -> PCIe adapter didn't help. The card is not detected by windows when connected to M2_2, and goes crazy when connected to M2_1 (just the same as to PCIE4).

Tried ubuntu 17.10 and arch. Kernel panic on boot.

Also I don't recommend updating bios to P4.40. It doesn't boot even with 5 cards. Didn't try less cards.

It is stable on P3.20 with 5 cards and win10 though. So I guess I have to leave it at that.

I have this board and I am having issues with six GPUs -- any tips ?

So I picked up the ASRock AB350 Pro 4 because I wanted to build a new desktop and figured what better way to benchmark than mining?

System:
ASRock AB350 Pro 4
Ryzen 5 1600x
Viper 4GB
Kingston UEFI 16GB USB3.0
Corsair HXi 1200W
v0008c risers (Amazon)
Crimson BETA blockchain drivers
Windows 10 Home N

After some trouble, I managed to get 4 cards up and running reliably (99.7% uptime since NYE) by skipping slot 4 (PCI-e x16 #2). So far I haven't figured out the magic mojo necessary to get 5 cards online but getting 4 cards up was as simple as BIOS programming them one by one then adding them to the system one at a time; it took a few driver patches after adding new cards but Win10 boots really fast off the USB so it was only about a two hour process to benchmark them all, mod them and install them.

Once I hit that 5th card though I started to have problems booting into Windows. I've tried a few things but I'm not going to go to any extremes. Once I get that lucky NowInStock notification and I snag myself a Asus ROG STRIX GTX1080Ti this will be my primary desktop and gaming system so I don't want to muck about with the BIOS too much.

the exact same issue here mate!

fucked up :(

it might be a limitation from the motherboard, not even bios updates.

I did read some user with Ethos had been able to run all 6

Ugh I think my ab350 pro 4 is a lemon. It can't recognize more than 4 GPUs even though I've checked with 3 different risers, tried gen1 vs gen2, latest BIOS, using 4g decoding, everything

What a waste of time

UPDATE:
I did succeed in getting a 5th card installed and mining. Pretty much just a "reboot and install drivers until it works" situation, but it might have had something to do with skipping the 4th PCI-e slot (x16 #2). I can't think of anything else I did.

So to reiterate:
BIOS mod each card one by one-
1. Install the card to the first (top) x16 slot
2. Use ATIFlash/Polaris to set your straps
3. Benchmark/tweak straps to your liking
4. Tweak settings in WattMan/OverdriveN/Afterburnrer or whatever you prefer until you're happy with them
5. Write preferred settings into BIOS
6. Reboot/patch/test
7. Once the card is modded and running the way you like pull it off the motherboard and GOTO10 for the rest of the cards

Next just install the cards one by one starting from the top PCI-e x1 slot and moving down (skip slot #4/PCIe x16 #2).
1. Shutdown
2. Install next card
3. Boot up/patch drivers if needed
4. Reboot, confirm card shows up
5. GOTO 10 until you have 5 cards working

About the only thing left to do at that point is build your .bat files and fire the rig up. If I manage to get a 6th card installed and working I'll update the thread again.

Wanted to provide my experience with a few boards but for anyone looking to get a AM4 mining board I just wanted to say that AsRock Killer SLIac X370 seems to work right out of the box with at least 5 cards. I used 5 of the slots on the board and it booted every time I added one without a single hiccup. It has two additional M.2 slots that are both designated for PCI use so I believe it could do 7 as I have had good success with the M.2 expansion slots on another AsRock board.

These are the other ones I have tried:

Asus Prime B350 Plus - Worked with 4 GPUs with no problems and is stable but it only has 4 PCI slots and it seems like the M.2 would not detect at all for some reason on this board.

MSI Krait Gaming X370 - Big disappointment. Could not get it to detect more than 2 cards on the PCI slots.  Tried different BIOS versions and settings.

AsRock Fatal1ty Gaming K4 AB350 - Have it running with 4 PCI + 1 M.2 currently but to get that 4th card working I have to unplug the usb from the riser of the 4th PCI card when it shows the windows loading screen. It was a trick I learned here but I have had to to it every time my system restarts or else it just constantly reboots. I was gonna try the second M.2 slot also but saw in the manual it is only for storage unlike in the Killer X370 board.

I too am having problems with the AB350 Pro4 Mobo. It works perfectly fine with 5 GPUs, but as soon as I use the two PCIe x16 slots - the one on the secondary PCIex x16 is not recognized.

Windows boots every time without any problems, but only 5 GPUs are recognized. I haven't tried using an M2 adapter so far and I am thinking about switching to EthOS, but spending 40 bucks on the off chance that it will recognize the 6 GPUs properly doesn't seem a good idea atm.

If there is anyone that managed to get 6 GPUs working on that stupid mobo, please enlighten your fellow miners :)

I recommend you get a M2 card. The ultra m.2 slot on the pro4 should work and I have found them to detect easily without any issues so far. Just make sure you buy one that has good reviews. The first one I bought was from BeeEaster on Amazon and it was starting to burn up as soon as I turned on my computer. I did not have the power cable connected to the m2 card as is recommended.

Haha after 3 days struggling I finally achieve the impossible, 6x1080ti on a AM4 motherboard mining guarantee, not counting 2x M.2 slots. I could achieve 8xGPU if i have enough part which are on the way shipping.

Spec: Ryzen 7 1700, Asrock X370 Killer SLI/ac (2xPCIe 16X + 4xPCIe 1X + 2 SATA/PCIe NGFF M.2). Windows 10
Riser: 6x Ubit riser latest version with LED. One came defective, contacting them for the replacement.

So with only 5x riser on hand the only possible way I think of is one of the GPU must be connected directly to the pcie 16x on the motherboard and it's just how i did it. So here is how:

1. Download this portable freeware and have it ready http://www.guru3d.com/files-details/display-driver-uninstaller-download.html
2. Download latest driver for your GPUs and have them ready.
3. Download and flash latest BIOS for your mobo (mine is version 4.50 2018/1/16)
4. Go to your UEFI/BIOS, find and enable "IOMMU" equivalent to "4G decoding", also change 2 PCIE (or PEG) options to "GEN1" (forgot what exact settings are but its there).
5. Always reboot or startup your system in SAFE MODE during GPUs installation. (WindowsKey > msconfig > Boot tab > Boot option: safe boot). Repeated this everytime you reboot your computer for a great chance to success.
6. Boot in safe mode, run DisplayDriverUninstaller.exe, choose Clean and Shutdown.
7. Install your GPUs, all at once or one by one (like i did) whichever work for you. My setup is 5 GPUs via risers and one in the slot 2 PCIE 16X.
8. Patiently* boot in safe mode. Check device manager to see if 6 GPUs show up. If they do appear then go ahead and install driver, reboot to normal mode and enjoy. If not then repeat carefully. As long as I reboot into safe mode all my steps are solid and work 100%.

*After new GPU(s) installed, the main display should be the GPU installed on the first PCIE slot aka PCIE slot 1. Either that or try to plug your display cable (HDMI/DP/VGA...) into the PCIE slot 2. Worst case then try all other GPUs until windows show up on your monitor.

Also I don't recommend any MSI boards for this example unless they are made for mining. Look at their mobo specification they tried to hide as much information as possible, the missing information can only be found in their specify manual of each mainboard. What they hide are some SATA and PCIE lanes will be disabled if there are devices connected to the other lanes. That pretty much explain why MSI's owner has no luck stacking their GPUs. Best brand for experiment should be Asus and now I just found out Asrock too: No PCIE lanes are disabled no matter how many you plug in, they have a better chance to work. Also Asus and Asrock board mostly come with 6 or more PCIE and 2 M.2 which is a plus for both of the brand.

Well, I think I cover almost everything I did to get 6(+2) GPUs working on a AM4 motherboard. If you think i miss anything or have any question please send me a reply. If you find my post helpful please share them as much as you can. I am an AMD fanboy and I want AMD to be popular not only in gaming but also in mining. I'm looking forward to build my 2nd rig with Zen2 if possible. Good luck and happy mining.

Edit: Here is proof guys.https://imgur.com/a/xoTqY

MSI Gaming Pro/Gaming Carbon Pro will do 5 / 6 cards without many issues.  Update to Fall Creators Update, have DDU handy if something goes wrong the first time.  I found it was pretty easy to get 6 Nvidia cards working on these AMD4 motherboards.  It was trickier with the AMD Vega 56's, but Fall Creators Update and other tweaks solved that as well.  The nice thing with these Ryzen builds is that you can have several threads of the CPU working away on Monero while the GPUs mine ZEC or something else.  Easier to pull off on Ryzen motherboards than with i3/i5 Intel builds.

Did you enable 4G decoding?

I don't think I will ever build a rig that is not +12 gpus again. Im in love with the Biostar TB250-BTC PRO Ver. 6.x Intel LGA1151 works so well in comparison with my other mb's. I have 10 rigs and 2 has TB250 in the rest are a mixed of 97 and 270. AMD really need to make up some ground here.

MSI B350 Gaming Plus 5 Pcie /  ryzen 5 1500x /  M.2 ssd 120./win 10 Pro

7 Gpu stable:
3x rx 570
2x rx 580
1x r9 290
1x rx 560

1 Multiplier pcie (4 usb ) =  slots pcie  3.0x16
3 riser usb  = 1( slots pcie 4x) / 2(slost pcie 1x)
 

Okay so far stable for my system.

System: AMD Ryzen 7 1700
MSI X370 SLI Plus with latest mobo firmware
3x Palit GTX 1070 Jetstream
2x Gainward GTX 1070
OC settings: 70% Power, +100 Core Clock, +600 Memory Clock, 80% Fan Speed
Corsair 16Gb 2400 Mhz RAM
Xigmatec X-Miner 1600 watts
Windows 10 Pro updated (Version 1709 Build 16299.309)
120 GB SSD and 2 TB HDD
4G decoding disabled


So I tried Windows 10 build 1511 (fresh install), all 5 GPU detected fine. No issues except hashrate is terrible - getting 3 mhz on ETH on each cards. Had to upgrade to the latest Windows version and now all works well. Installed in this order: x1 / x16  / x1 / x16 / x8, installed 3 cards first on x16, x16, x8 then the remaining 2 cards on x1.

Before doing a fresh install of 1511, I had terrible stability with 4G decoding enabled - multiple issues like unable to boot into bios, freezing etc. So build 1511 and 4G decoding didn't work for me.

So the ASRock AB350 Pro4 is fine for 6 AMD cards with win 10 pro? How are you connecting the 16x second slot?

Currently 5 GPU's on AM4 board - No Problem!

Mobo: ASRock Fatal1ty AB350 Gaming K4 AM4 ATX AMD Motherboard (sweet board I love it so far)
CPU: AMD Ryzen 3 1200 (mining XMR - 175h/s)
Memory: 1 x Corsair Value Select DDR4 - 4GB
GPUs: 5 x RX560 4GB (BIOS flashed, OC'd and UV'd) getting about 13.5 to 14 MH/s per GPU for ETH
OS: Windows 10 PRO 64 - Latest Updates Installed
AMD Driver: 18.1 (I find this version most stable so far on all of my rigs)
Risers: Versions from 8S to 9S
I did not make any changes in BIOS - everything left on stock settings since I purchased it last week.

I am using every PCIe slot except #5 (for some reason I skipped over this one - don't remember exactly why)

I installed the first 4 GPU's one at a time from PCIe slot #1 to PCIe slot #4 with no problem.
When I got to GPU #5 I had to Shutdown the rig - flip power switch for the PSU to OFF - Install the riser on PCIe #6 - Turn PSU switch back to ON and turned rig back on. I was able to see the 5th GPU with no issue - Applied the AMD clock/time patch - Rebooted and all 5 GPU's are present.

I am currently waiting for another riser and a M.2 adapter to arrive from Amazon so I can try GPU #6. I'm not sure if I will need the M.2 adapter or not I am getting it just in case. I was not planning on going more than 6 GPUs on this board. I keep all my rigs at 6 GPUs. That's the standard I follow. This is my first AMD build. I have 3 Intel Celeron rigs that run for weeks at a time with no problem. I want to try AMD if possible - I am a fan of the Ryzen CPU's. So far the 5 GPU's have been running for almost a week no crashes nothing. When I first turned the board on for initial setup I was using the onboard video and got no video at all - I thought I had a bad board at first - I didn't realize that the video is set to dedicated PCIe slot automatically - I plugged in a riser to PCIe slot #1 and was good to go - Just some info for anyone running into this issue.

I will post my results with GPU #6.

If anyone is interested in any help you can contact me and I will provide you with my services.

Thank you! - Trap
trapcrypt@gmail.com

I've been running 5x GTX 1070s in my Gigabyte GA-X370 Gaming K3 board (5 PCIe slots) for a while now, but have struggled to get a 6th GPU working.  After trying a couple different M.2 to PCIe adapters, I finally found one that works:

https://www.amazon.com/gp/product/B074Z5YKXJ/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

At this point I just have a GT 610 slotted directly into my primary PCIe slot for testing and to improve screen response when using Remote Desktop.  Will update here if I buy another 1070.


Oh, and using Windows 10 Pro (64-bit).

Can anyone tell me whether the Ryzen 3 2200G will support 6 or more GPUs?
I've heard there isn't enough PCie lanes on the Ryzen 3.
I'm also looking for a mobo which plays well with Ryzen 3 and multiple GPU. I currently have 4 Asus Vege 56 on hand.

Is the number of PCIe lanes even an issue for mining?
I might be wrong but I was under the impression that the bandwidth used is so small that the amount of lanes is actually irrelevant?

Max 6 pcie  , 7 GPU black screen for my 2200g  :-\ .
Ryzen 5 1500x OK for 7 GPU .

6 GPUs is good for me. What mobo are you using? I'm planning to get the Asus Prime x370 Pro, but still deciding.
I might even overclock the Ryzen 3. What PSU do I need?

My mobo for 2200g(lite h/s v7 monero) = b350 gaming plus .
4 pcie in mobo , 1 multiplier pcie ,and conflict driver Agpu. ???

b350 gaming plus +ryzen 5 1500x(390-420 H/s v7monero) = 7gpu and stable .

2200G no good .

maybe because of pcie multiplier?? What PSU are you using for the risen 5 setup?

ryzen 2200g +7 gpu AMD / msi 350 gaming plus .
driver gpu : 18.5.2


https://image.noelshack.com/minis/2018/26/1/1529955860-capture2.png (https://www.noelshack.com/2018-26-1-1529955860-capture2.png)

 

AB350 Pro4 setup, another recipe:

I have this MB working.

Setup:
1) Interferences:

a) M1 and Pcie 4
b) M2 and SATA 3_3

PCIE2 and PCIE4 also has some interference issues with A series APU's

2) Configuration:

a) 6 identicle 1080ti's
b) Ryzen 1700
c) 32 gb of memory
d) Driver 398.83
e) MB Bios: v5.0
f) SSD
g) The very latest Win 10
h) Note: PCIE2 and PCIE4 are full length slots

3) What's the scam?

a) The v5.0 bios:
   i) has 5 - 10 buried pcie settings where I set a mystery setting to gen 1.
   ii) Turned off all sound and serial port connector.
   iii) Couldn't find IOMMU setting
   iv) Changed PCIE2 from one 16x slot to two 8x slots.
 
b) Tricks:

i) Installed the first card(system video) in PCIE2
ii) Installed the 2nd card in PCIE4
iii) installed the rest of the cards one at a time from the remaining lowest to highest slot. It will take 5 to 15 minutes for the MB elves to correctly install the display driver EACH TIME. Reboot and move on to the next card

I've had to do this a couple of times because sometimes GPU4 goes rouge on reboot. I now don't do a reboot on change of coin.
 

Hey, been having issues with Asus B350-F strix gaming motherboard, 4 rx580s 8gb work fine then when the 5th goes in BIOS doesn even post and i just get black screen...what version and where would i find to enable 4G decoding in the BIOS?

Will be testing a ASUS ROG STRIX B350-F GAMING AM4 soon.  Hoping to get 6 of the MSI RX Vega 56 going.
[/quote]

We have almost 10 of ASOS ROG STRIX B350-F cards and Ryzen3 1200. We had some initial issues, but after flashing the latest BIOS we could just use default settings and 6 GPUs would work every time, no hassles.
[/quote]

Please send me BIOS config as I have the saem setup and can only get 4 rx 580s to work

Please share BIOS settings as im have issues with my 5th gpu

can you assist me flashing my bios for Asus B350-F ryzen 1200 Board lol...cant see some of the bios settings like the 4G decoding

this is old, from memory, gen 1 / 4G decoding 'board msi", this was possible with pcie multiplier (4 usb) on 16x

I have that Asrock AB350 and I've used it for mining before sending it off to a cousin of mine for gaming purpose only but don't ever try investing on that CPU for mining, 500hs in XMR won't give you any joy and you will be wasting electricity for pennies, how about getting GPUs like RX580 8gb editions?

If you have interest in CPU mining on Monero it's better you buy high end Ryzen gpu like Ryzen 9 5950X or 5900X, don't buy any Ryzen CPU that's lower than the RYZEN 9 Variants, but honestly this CPU are too costly, enough money to build a entire gpu mining rig