Topic: 8 card limit on Windows is Removed! - page 3. (Read 8548 times)

Hi I am trying to get 12x 1070 running on Win10/Biostar BTC-250PRO
ATM getting WHEA uncorrectable BSOD, putting it down to driver or installation issue but now worried I cannot find any confirmed details of Win10 systems over 8 NVidia GPUs.

@roptix did you have any joy?

All - The following is my email exchange with ASRock support.  Thought it may be helpful to others.  The 'hack' below did NOT work for me.  I had to roll back to an earlier build AND had to do the hack.

Rig:
H110ProBTC+
Trying to build 12 GPU rig, can only get 7 cards running
8 - 1060 EVGA GTX GPUs
8 GB RAM
Windows 10 Pro 1709

I am still having issues with this motherboard.  I have a somewhat bizarre situation.

Regardless of the number of GPUs I have installed in the MB, device manager throws a code 43 on the 3rd from the bottom in the device manager list.  Meaning, if I have 10 cards installed, the 8th card is not working and shows code 43.  If I only have 6 cards installed, then the 4 the card throws the code.

I've used DDU to uninstall and then reinstall Nvidia's drivers at least 4 times.

Thoughts?

ASRock Support:

This issue is related to newer OS version, Windows 10 RS3 (1709) 16299 build.

If using previous Windows OS version, RS2 (1703) or RS1 (1607), the issue would not exist.

May also try work around with registry trick (see below for detail) to check. Otherwise, please use previous Windows version.

However, we recommend user to use previous Windows 10 version for their system.

 
(work around with regedit) code 12/43

However, may give it a try with registry trick below to check if it worked. Otherwise, please use Windows 10 RS2 or RS1.

Click the Start button, type regedit in the Start Search box, and then click regedit in the Programs list.

User Access Control permission If you are prompted for an administrator password or for confirmation, type the password, or click Continue.

Locate the following registry subkey, and then click it:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\PnP\Pci

If the HackFlags registry entry is not present, follow these steps:

On the Edit menu, point to New, and then click DWORD (32-bit) Value.

Type HackFlags, and then press ENTER.

On the Edit menu, click Modify.

In the Value data box, type 0x600, click Hexadecimal in the Base area, and then click OK.

Exit Registry Editor.

 

If the HackFlags registry entry is present, follow these steps:

Right-click HackFlags, and then click Modify.

In the Value data box, type 0x600, click Hexadecimal in the Base area, and then click OK.

Exit Registry Editor.

It's not a secret, we're probably reading the same forum, I also saw that message about mining cards working. I just don't think that mining-specific cards (especially the ones without video outputs) are a good investment for small miners so I didn't mention those in my previous post. But yeah, 19 nvidia cards should work if 6 or more them are the mining edition cards.

You could go 13 Nvidia cards and 6 Nvidia mining cards. That is the secret !

That is a very good information thank you for this post.

nice information thanks man 

I've seen reports from people not being able to run more than 13 nvidia cards in one rig. Didn't try that many myself so can't say for sure, but those who tried it said that they could add more amd cards to that same rig (up to 19 cards in total), but not more nvidia cards (so the rig would work with 13 nvidia + 6 amd, but not with 14 nvidia cards).

there is no limit for nvidia cards only amd drivers block more then 8 cards...

I only have 8 Nitros so i'm unsure if this would work on yours too.

Try it, you won't lose anything anyway.

Tried auto and Gen 1, the same result. Switched these cards to other rigs and i made 12 x rx570 with ethos on this mobo.

So you got it to work with 12 nvidia on windows with Gen 2?

I have the same mobo, 8 GPUs and it doesn't work if PCIE isn't in Gen 2.

Gen 1 ?

Can't get it to work with Biostar TB-250 BTC Pro and 12x GTX 1060
8 cards work perfect, when i add one more after installing drivers system crash and windows do not boot up.

Windows version 1709, drivers 388.13, anyone have any solution?

Can anybody confirm this?

Can someone pls who install the newest AMD driver try WattTool http://www.overclock.net/t/1609782/watttool-a-simple-tool-that-combines-overclocking-with-vrm-monitoring-tweaking-for-rx-400-series If it's working again since Overdriventool is not working? Thanks.

Hi Guys ,
               Now its possible to run upto 12 AMD GPUs on Windows 10. Check my post

https://bitcointalksearch.org/topic/breaking-news-run-12-amd-gpus-on-windows-2317091

8x of my Nitro+ 580s happily hash 30+ with only the 8pin connector plugged.

I have to ask. how did you power so many gpus if they need 6+8 pin ?

PSUs only have 8 6+2 connectors so it's limited to 4 gpus. even dual PSUs supports up to 8 gpus.

unless your GPUs only use single 8 pin connectors?

I think they merged their "regular" and "blockchain" drivers now, the latest 17.10.2 driver has a toggle for "compute workloads": https://www.anandtech.com/show/11959/amd-releases-radeon-software-crimson-relive-edition-17102
So that's probably how it's going to be now, just one driver with a toggle instead of separate blockchain and gaming drivers.

That is good to hear, nvidia is blockchain driver hassle free, amd users rely on the blockchain driver. Now, AMD needs to update its blockchain driver.