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I cant get this MSI x570-A PRO to mine stable with more than 2 gpus. (5700XT undervolted Asrock Taichis, Ryzen9, 32Gb, Win10, updated mb bios, 850w corsair platinum PSU, many Adrenalin versions tried).

If i manage to get 3 cards recognized (all i have for this setup), both Claymore and Phoenix crash in a few minutes.

With 2 cards, regardless of pcie slot used or type of risers, it works perfect.

MB BIOS settings are the ones recomended for mining (above 4g blah blah, Gen1.. )

I'll try HiveOS next, but should i get another mobo?

I know this x570 A-Pro is not the best in VRM cooling, but i dont plan to OC the CPU.. its only for casual gaming and mainly to mine with these 3 gpus.


Thanks for your answers!

In 2017 I bought MSI Mortar Arctic B350, with 4 PCI-E, but I never managed to mine with 4 cards, only 3 and with some problems, tried everything like you said, update bios, change bios config, update windows, change risers, change cards etc, one day I was so tired that I sold this motherboard and bought Asus B350F Strix, and I put 6 cards running without any problem, simple and easy
After that I bought 2 more motherboards from Asus, the same model, and all worked great

Maybe the problem is the motherboard, and it's doesn't worth to spend a lot of time trying to fix this
I suspect there's something related to PCI lanes, but it's just a guess, the motherboard can't handle with more cards

The best thing to do is research before buy any motherboard, to see if the mobo is good to mine

I own lots of amd x570 mobos.

They suck with lots of cards.

you can run the cpu on xmr
you can run 2 cards on eth

they will work fine.

bump to the third card they crash.

I own 4 ryzen 3900x rigs with 1x 5500 or 1x 5600 or 1x 5700. 1x 1080ti 1x 1660ti all work great I mine both xmr with the cpu and eth with what ever gpu is in there.

most are okay with 2 cards all suck with 3 cards.

I have 2 thread rippers. on the Asus prime mobo
https://www.newegg.com/asus-prime-trx40-pro/p/N82E16813119219?
I have a 3970 and a 3960.

They are great with 1 card
They are good with 2 cards
They are okay with 3 cards. At the moment I am running them with  1 power color  red dragon rx 5700xt


https://www.amazon.com/gp/product/B07WNYZJ7Y/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1




I owned 1 ryzen 3950x rig same issue.
I owned 1 ryzen 3800x
I owned 1 ryzen 3700x


So basically eight or nine mobos of x570 mobos 30 different cards and 3600 3700 3800 3900 3950 cpus. 

1 card great
2 cards good
3 cards spotty at best.

3 threadripper rigs-------- I sold my 1920 thread ripper
2 different mobos    Asus and Asrock taichi

1 card great
2 cards good
3 cards better then spotty

The amd threadripper cpus are really good for mining xmr

   a 3960 thread ripper with a amd 5700 is nice rig.  it won't pay off fast but if you do mixed use it is very nice.

I have many ASUS M5-A97 mining flawless since 2015. ASUS seems a great mobo maker, indeed.

Sadly, at the moment of building this rig, MSI was my only option available here.

Thanks for your tip.

Hey wallobserver Philipma! Thanks for your answer!

I went the x570 route as i wanted something decent for the Ryzen 3900x (for gaming, not for mining) and i thought the midrange chipset would be good enough for 3 cards.. big fail then.

update the bios.  I've had problems early on with the 4xx and 5xx series boards when they were first released with release bios in that they would only recognize a couple cards.  I think it was around AGESA 1.0.0.2 release for the bios that they started recognizing more cards.  Asus boards have worked the best for me.  They seem to release more BIOS updates more often.  Dealing with gigabyte has been a pain as bios updates are not that frequent.

I don't have that specific board.  i have the MSI X570 Gaming Pro Wifi, with a 3950X, two reference 5700 cards, and 1200 watt platinum ps.  All problems that i've had have been fixed with bios updates.

Yeah he can do 2 with current bios its the third card that's a bitch.

BTW.

 I like my Asus boards over any other  amd board.

I have

asrock
asrock taichi
gigabyte
Asus

the Asus boards work the best.

and funny thing about amd 5000 series cards.

I have 30 different ones.

2 rma's

both never worked on any board amd or intel windows or linux. and there were Asus dual rx 5700 xt.  I had to return them. I Tried them for days on different setups.

He said he already updated the mobo bios, and didn't work
You have 2 cards running, it's good, the problem is with 3 cards +

We all agree Asus have the best motherboards to mine, and it's good to research before buy any mobo

You said about Gigabyte, I remember I have once a Gigabyte for AM3 running with FX 8300, and I managed to deal with 5 cards, but with some troubles, nothing easy
It's very frustrating and time consuming to deal with 2 or 3 rigs having problems time to time

Try use only risers. you can keep x16 slot one card others on risers. if you can try 1 by 1. but sometimes amd drivers will fail that way. after windows shows all your cards remove drivers using ddu in safe mode then install amd drivers back. if you plug botsh x16 slots you may have trouble. because x16 uses alot lanes, thats why use all with risers. good luck

Yes, alucard, bios updates solved many issues in this case too. Like delayed boot and freezes, and PCIE compatibility....

Version 7C37vH6
Release Date 2019-11-07

Description
- Improved system boot up time.
- Improved PCI-E device compatibility.

Version 7C37vH5
Release Date 2019-10-30

Description
- Update AMD ComboPI1.0.0.4 Patch B (SMU v46.54)
- Improved system boot up time
- Improved NVMe device compatibility
- Supports AMD Ryzen 5 2400G and Ryzen 3 2200G CPU

and so on...  Msi seems quite active in this regard (or there are many bug to fix yet)

Thats a good one to try. Thanks for your idea. I'll try 16x, 1x, 1x.

(i made this build partially for gaming, one 16x riser is a must)

another thing you can try (i've only seen this in one system i have... i'm currently running 24 systems) is plug one gpu in the pciex16 slot with video attached to it...and the rest where ever you want.

As i was saying, i had one system (the last system i built.. waiting for new release for next builds) that would not boot when i built it unless i have one gpu with monitor attached plugged in the first pciex16 slot... though it's a different problem than yours.

also, have you tried each card individually to make sure it isn't a specific gpu?

Also, make sure the pci-e slot isn't shared with something else creating a conflict.. i.e. pci-e x1 slot shared with pci-e ssd... pci-e x16 slots normally aren't shared slots, though the lanes could be split..i.e. physical x16 slot is really electrical x8.

Make sure your M.2 slots are disabled.  Im trying to find the pcie diagram for that specific board but looks like they are probably shared with the M.2's

On mining rigs i disable just about everything that isnt needed audio / SATAs / M.2's / etc....

Found one in manual...looks like the GPU0 slot (main) can support a multiplex adapter to get the most out of the PCIE bus.  The one off the PCH seems to only support a single GPU. If you have something like a 1x4 PCIE adapter you may be able to get to 5 easily (4 off the plex and 1 off the slot2).  If you have a SQRL X2G laying around then things can get interesting.  Ive run those with one off main slot to get connection...then plugged another into a riser off the first port...getting 7 from the single slot (one is lost feeding from the first X2G to the 2nd X2G on a riser.). I know some had enough to get crazy numbers daisy chained. Fun stuff. 


Ive run into this problem with a couple of mobo's and have been able to solve with cheapo $10-$20 dollar 1x4 plexs.  I have had some plex cards i never got to work..but i must say the X2G's while not cheap are really high quality gear.  Of course proc also limits what can be done...but 2 seems REALLY too small.

16x is plugged and it's GPU1 in Win10.

Its not GPU related, as i swapped it from another working rig, swapped risers and many other tricks with no luck.

No conflicts (i guess), as i'm using storage at M.2

The manual states that some slots cant be used at once...
- 1x PCIe 4.0/ 3.0 x16 slot (PCI_E1)
- 1x PCIe 4.0/ 3.0 x16 slot (PCI_E3, supports x4 mode)
- 3x PCIe 3.0 x1 slots*  * PCI_E2 will be unavailable when installing the PCIe card in PCI_E4 slot

So, out of 5 slots, you should be able to use 4 at once...  But i cant manage to get 3 stable. >:(
What drives me crazy is that i'm able to get all 3 detected ok in Windows. Miner start building the DAG, and fails when it should start hashing..
Next boot the GPU dissappeared. Only cold boot and entering BIOS make it show again.

This MSI x570 looks ok for gaming, but maybe its not proper for mining (although the bios menu has options for doing so)


I'm currently checking the 'ASUS ROG STRIX B550-E Gaming' manual.. Still undecided

Thanks for taking the time to look for info, miner. Really appreciated.

As you state, mobo manual says M.2 is not shared with pcie, and it shows only 1 pcie thru PCH.

If i dont get you wrong, i should multiplex from the main PCIE (CPU bus?), and use the PCH lane for the gaming card?

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

ok.. i thought you could only get two cards running, but not three cards running (i.e. recognized)

If what i'm reading is right, is that you are running a Ryzen 9 cpu, along with three 5700 XT gpu on a 850 watt platinum power supply.

if that is the case, then the problem is that you don't have enough power if you run all the gpu and cpu at 100%... the 5700XT can consume 200 watts each easily.

if the cards are all recognized in windows and the adrenaline drivers, then down clock and run the gpu at 60% power (i.e. minus 40%)... the XT will mine with that no problem.. if it works at this point, then it's your power supply is not powerful enough for what you are trying to do with it.  As a gaming system it would be fine, but for mining it's not.

Yes look on amazon or similar for something like

XT-XINTE PCIe 1 to 4 PCI-Express 16X Slots Riser Card PCI-E 1X to External 4 PCI-e USB 3.0 Adapter

under $20.  Plug you risers into the ports on it instead of the little edge card risers.  The first gpu will be off the top closest to the screw tab or the bottom vertical (cant remember)

and yes power is always a concern but just booting up and idling should not be an issue.

This makes the most sense.

It works with any 2 cards in any 2 slots, but it crashes with 3 cards when mining is started. That means it's a
load dependent problem, not a configuration problem. You've got lots of RAM, and a big CPU so that's not the problem.
Overheating would cause throttling but shouldn't crash. That leaves power.

Thanks for the advice, but its not power related.

Cards are undervolted (bios mod) and combined they consume 240w max while mining.. a 33% increase wouldnt compromise this 850w PSU.
I'm not CPU mining.

Next i'll revert MB bios to a previous one, 4 revisions old, as i read that in new versions they fix one thing and break another...

Version 7C37vH6 Release Date 2019-11-07

- Improved system boot up time.
- Improved PCI-E device compatibility.


I'm still trying slots combinations, but i'm starting to get concerned about premature wearing of pcie slots, because of insert/reinsert of risers. No point beating a dead horse  ;D ;D

have you measured it at the wall?  have you measured a peak at the wall?  is the power supply brand new? (refurbished psu aren't the best to be mining with... they fail for a reason that isn't always apparent.)

Its a brand new Corsair HX850i (platinum). i'm almost sure its not power related..

I dont bother with cards in the actual slots this present new problems like the 12V supply on the PCI'e slots.

I do highly recommend going to risers on all cards which removes the strain on the bus power.  Each riser gets it power directly from the PSU via either SATA (less optimal) or a 6 pin PCIe connector.  Consider its like 70W each card can draw through the PCIe bus most mobos not meant for mining will have some trouble.  Ie you could be trying to pull 210watts through the bus on top of the PCIe x 8 connection.  So by using riser this issue is eliminated.  It also would put to rest any concerns about wearing out the edge connectors...although i dont think that is an actual issue.

The video cards even is used for a monitor work just fine on a riser on x1 pcie.

And to be clear there is no way to limit what is drawn on the PCIe bus....so best to have it on its on riser.

If you have questions regarding any of what i referencing just ask...happy to explain and post the info.\

None of my gpus are in actual board sockets all are on risers.

None of mine are in board sockets either. I use flat ribbon cable risers, with molex connector and caps. Btw, I prefer small rigs setups, with 4 gpu max.


I refuse to accept that all my rigs with Sempron140 from 2013 can handle 4 gpus, and this Ryzen 3900X setup on a x570 mobo cant cope with 3.

If its full ribbon flat cable type then you are still pulling power from the pcie bus.  It needs to be the short edge card with just a usb cable to a riser (with its own supply of power from either sata or 6pin pci).  I have some of the ribbon wire ones from Fractal Design (not cheap)..but if its carrying all the pcie card connections then its carrying the power up which only makes it worse (longer distance / more loss).

What you want can be found on amazon under

Mining Powered Riser

Its not that your PSU isnt supplying enough power...its that the mobo's isnt designed to deliver multiples of that at a time.  This is why mining specific boards have additional molex or sata plugs on each end of the PCIe bus to plug psu plugs into for additional power to the bus.  6 gpu boards would have 2 additional plugs and the 13-19 boards would have 2-3 depending on board. 

This is of course assuming thats whats going on...but i am tending that way...because anything over 2 is going to a problem.  Even 2 on some boards is too much.