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Hello, the mobo asrock h110 pro btc+ (https://www.asrock.com/MB/Intel/H110%20Pro%20BTC+/index.asp) accepts maximum of 13 gpus and people were successful with 12 gpus.
But I cannot make the 8th gpu to get recognized under Windows 10 or Ubuntu 16.04.
Only 7 maximum it get recognize. I swapped with power connectors and the pci-e slot and only the first 7 (1 is closer to the cpu) always gets recognized.
As in the ]link (https://drive.google.com/open?id=1xrFImRfQv2_BeEPbaMfZz1Od9DvCldrA), under the bios, there is only 7 pci-e (https://drive.google.com/open?id=1xrFImRfQv2_BeEPbaMfZz1Od9DvCldrA) is shown.
I am using PSU with 1200 watts and it has enough power to run 8 GPUs. Also tried secondary PSU(850 watts) and connecting just that 8th gpu.
In both the cases, the fan spins, lights on but it gets unnoticed.
I am using gpuz (https://www.techpowerup.com/download/techpowerup-gpu-z/) and windows device manager and there are only 7 listed.

It looks like there could be some bios settings that limits to only 7 gpus but not sure though. Played around with bios settings and cleared the CMOS with battery reset but did not help.
Anyone faced such issue? Please let me know.

Thanks

You're in the wrong section, this area is for Bitcoin only and GPUs have been obsolete for direct mining of BTC for years.  Repost/move this to the Altcoin section.

Having the exact same problem.

My setup is :

Asrock H110 Pro btc+
8g Ram (2x 4g dimms)
Pentium 4560
10x XFX R580's
3x 850w PSU (platinum)

For now i have only connected 7 cards using 2 psu's. Im waiting for a cable to connect all 10 cards and the 3rd psu.

I setup windows and installed the wrong drivers first. So had to use DDU and reinstall the AMD crimson pack. Now gpu-z and windows device manager sees 6 cards.
I did a bios update but that didnt change anything.
Also when i have my display connected to one of the 580's i CANNOT access bios setting.
If i disconnect all cards and use onboard graphics i can access bios but i get the same picture as the OP posted. Only 7 pciE showing in bios.

what gives?

btw using 6x cards with modded bios and AMD mining drivers gives me 30Mh/s on claymore mining Ethereum but i have 10x cards and i need to use them all.

thanks for any help..much appreciated!

They need to come out with the latest firmware release from what I remember last time I checked into to see how many cards can be enabled on a single mobo.
Either this one or the one Asus released with 19 gpus at once.
They can not get it past 7 or 8 cards without that firmwire update they have promised to release for months now so to enable this vital selling point of what these motherboards were made to do.

You need to use Windows 10 1709 (Fall Creator Update) and 17.11.4 AMD Drivers and don"t forget to change mode to COMPUTE for all GPU.

I too have have the similar setup as yours. I sent an email to the asrock tech support through their website. Hope to get some response.

Hi motoprose, would be able to see which mobo it is for? There is a BIOS upgrade posted on website but suggest not to do that.
I have asked the asrock tech support mentioning this problem. Hope to find some reply from them.

My bad.
It was for the asus boards.
Here is what they said on their website for their mobo that does not get past 8gpus without the update to their latest firmware:
B250 Mining Expert currently supports a total of up to eight NVIDIA and AMD GPUs. An unlimited number of GPUs will be supported following a driver update that is planned for Q4 2017.

Make sure all of your PCI slots are set to Gen 1 in the BIOS.

Windows 10 1709 Creators or above may help.

Use the same power supply to feed the 2 molex plugs near the PCI-e slots on the motherboard. These MUST be supplied powered on that board.

Start with filling all of the black PCI-e slots first then move to filling the white ones.

Test with different risers as well to make sure you don't have a faulty riser.

I also recommend making sure that the riser and the video card are also fed off the same power supply!

Hope this helps!

Hmm interesting.  On Asrock website they advise to put first vga into full slot. Than start from the closest to CPU and follow in order.

For me it is worked well.

I just add vga at random slot, and install all of it together (12 vga max).

This was advised by an Asrock tech. It worked for me :) I did however have the full slot filled first as well.

Thanks for the post. I am going to try this all again and check. There is CD came with the mobo, I did not used it so far.
Does the CD needs to installed prior to usage? Please confirm.

I never use any of those mb cd, just update windows till no update, then make image for backup/clone later and only need once install windows, all other rigs are using that clone.

Is this board better than the Asus B350 19 gPU motherboards?

I was just about to pull the trigger on one that was selling for $325 on ebay just this afternoon.
They are had to find online but newegg has them for half that price but always out of stock. :-\

They are incredibly easy to get running. Check Ali Express. Most of them come without a Battery so in the 10-15 day waiting for it to arrive go buy one!

Which? The Asus B250 mining experts?

Aliexpress you are not sure if they are Chinese knock-offs especially coming from China.
You can see a lot of them showing up on ebay for half the price of them from Chinese sellers.
So you know they are not true Asus branded boards.

If they are not then show the link you are referring to please.

I have ordered several from this guy. https://www.aliexpress.com/item/100-New-in-BOX-ASRock-Technology-H110-PRO-BTC-H110-mining-board-support-13-graphics-card/32828771910.html?spm=a2g0s.9042311.0.0.WMZ6Rw  This motherboard is the exact same one that I got way back from Newegg just minus the battery.

I have tried today for the whole day today and unable to make anything more than 7 GPU recognizable either in Ubuntu16.04/Windows10.
 >:(

What version of windows? And what driver?

This sounds like a bad riser.

Windows 10 Pro, 64 bit and did all the latest system updates.
Also used the DDU to clean up the existing driver and reinstalled the latest driver from AMD (http://support.amd.com/en-us/download/desktop?os=Windows%2010%20-%2064).

I have a basic question,

• can all the 13 GPUs be RX580/RX570 or only 7 and the rest of them could be NVidia cards?
  I am planning to use only RX580/Rx570 (or RX480/RX487).
• I see only 7 PCIe (https://drive.google.com/file/d/1xrFImRfQv2_BeEPbaMfZz1Od9DvCldrA/view) on the BIOS chipset configuration. Is that how it looks like? I changed it from AUTO to GEN1 but it did not help.

Also, the psu Corsair AX1200i. I did not have any problem running 7 GPU's with that.
But I noticed that the consumption showing in the kill-a-watt is 1400KWH. Is that normal?
For the 8th one, I was using the Corsair HX850i as secondary.

My best scenario is like this, 12 GPU RX 5xx 1300w on wall with PSU 1000+850/750 (1000w for 7 gpu + system and 750w for 5 gpu), 13 doable but 2 last card hashrate halved. Do not use that adrenaline drive, use 17.11.4 and don't forget to change mod from graphic to compute  for each card. At 1st, windows will only detect 7 but after you install driver it will show all your GPU. And you need to mod your GPU bios so you can get lower watt and higher hashrate. You can read at forum how to get it or maybe ask your friend to do it for you using teamviewer.

Thanks for the help. I will try that 17.11.4 and check again.

same problem, it seems that some slot work only if you have other slot filled, so you need to fill all 12-13


this worked for me too but without gen 1 thing

Crazy motherboard. Had lot of tricking to get 7 cards working (1070) but can't get more. 7 got working by switching different cards to different slots and tried all the tricks mentioned here, too (black ones first, gen1 etc.) but now out of ideas what to do. BIOS just shows 7 and that's it although I have 12 GPUs. Send the MBO back and buy another one?

I know this is a super old post, but I ran across it and wanted to respond so it may help someone in the future. I hope you didn't send this mobo back because what you were seeing is completely normal. Starting at the "top" PCIex1 slot (closest to CPU), the PCIe slots are numbered like this:

                    [CPU]

PCIE1_1 (x1)
PCIE1 (x1)
PCIE2_1 (x1)
PCIE2 (x16) - LONG SLOT
PCIE3_1 (x1)
PCIE3 (x1)
PCIE4_1 (x1)
PCIE4 (x1)
PCIE5_1 (x1)
PCIE5 (x1)
PCIE6_1 (x1)
PCIE6 (x1)
PCIE7_1 (x1)

So there are 7 PCIe "lanes" and that's what you are seeing and controlling in the BIOS when it only allows you to only control the settings for PCIE 1-7.

Hi guys,


I got info from Asrock support that if You want to use all 13 amd cards on h110 pro btc , THEY ALL NEED TO BE THE SAME!

You cant find this anywhere in manual but it works.

I ever made RMA for 1 mobo... didnt know this.

I am guessing one of your riser isn't working properly. Have you tried switching around your risers and see if the GPU # in the OS changes?