Check your mining rig is using all your GPUS!

[Levieth02ng]

I'm not sure if this is specific to Asrock H81 Pro BTC R2.0 motherboards or others, but I thought I'd share my problem and the solution I found while building my new mining rig.

It appears that with Windows 10 Build 1709 the IRQ or memory allocation broke the resource management of multiple GPUs, in my case only 3 of the 4 1070s were working in Windows. I could see the error in Device Manager for one of the cards and gave a code 12 ("This device cannot find enough free resources that it can use. (Code 12)"). It was okay with Build 1703 so those people with automatic updates and an Asrock H81 Pro BTC R2.0 could be affected.

Lots of info in this thread on bitcointalk but the gist is a simple registry edit fixes the problem:

"make new key "HackFlags" as (DWORD 32) type value 600 as (Hex) in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\PnP\Pci\

and reboot."

Not sure what else it does but it certainly makes all my GPUs available for mining now. Just thought I'd share.

[pyoc70]

Hi
I need help to build my new Mining Rig

I have
Asrock h81 R2.0 Mobo
Rx 570 4 gb
Rx 470 8 GB 2 cards
Rx 470 4 gb Mining edition 3 cards
Rx 480 8 GB ( but it doesn't have bios switch nor the led light )
8 GB ram DDR3 x 2
Psu cooler master 850w and corseior 550 w
SSD 120 GB
Risers
1x to 4 x pcie expander card


I want to know
Which cpu will be better for my rig ?

Also need more advice to setup motherboard bios ?

[Pekine]

I have the following CPU for this motherboard -  Intel Celeron G1840 - 1150

[AngelSky]

Hi
I need help to build my new Mining Rig

I have
Asrock h81 R2.0 Mobo
Rx 570 4 gb
Rx 470 8 GB 2 cards
Rx 470 4 gb Mining edition 3 cards
Rx 480 8 GB ( but it doesn't have bios switch nor the led light )
8 GB ram DDR3 x 2
Psu cooler master 850w and corseior 550 w
SSD 120 GB
Risers
1x to 4 x pcie expander card


I want to know
Which cpu will be better for my rig ?

Also need more advice to setup motherboard bios ?

Processor: You can buy the Celeron G470 to any higher end Intel processor you can use in the mining rig set up. Other components you mentioned really good specification to start the mining rig. Since you splitted the SMPS into 850W and 550W you will find the power points in the SMPS more numbers than you needed.

MotherBoard: You can have Biostar TB250-BTC PRO Motherboard to Offer 12 PCI-E slot motherboard to have the maximum 12 numbers of cards can be added to the board with the PCIE riser package. If you make the aluminum or wooden mostly you can step upto 12 cards in the rig so it would be best option for you.
Maximum you can 19x PCI-E slot motherboard also available in the market. Its your choice to check according to your preference in that.

[pyoc70]

Hi Thanks for reply

Is celeron G1840 and G470 are enough for 6 gpu

I have to use this motherboard as I have already bought it 4-5 months back if I don't use it it will make me loss

Please suggest me a better psu for 6 Rx 470 cards and for Rx 570 cards

[Bimmber]

MotherBoard: You can have Biostar TB250-BTC PRO Motherboard to Offer 12 PCI-E slot motherboard to have the maximum 12 numbers of cards can be added to the board

Windows does not support more than 8 same gpu`s....  

[nitrobg]

MotherBoard: You can have Biostar TB250-BTC PRO Motherboard to Offer 12 PCI-E slot motherboard to have the maximum 12 numbers of cards can be added to the board

Windows does not support more than 8 same gpu`s....  

False. It does since the 1709 update.

[manji]

Is celeron G1840 and G470 are enough for 6 gpu

yes, Celeron series G was enough.

Please suggest me a better psu for 6 Rx 470 cards and for Rx 570 cards

RX470 has TDP 120 W x 5 = 600 W,  RX570 has TDP 120 W. I suggest get PSU, EVGA 1200 W

[pyoc70]

Hi Friends
Thank you everyone for replying n helping me

Now I have connected 5 gpu
Rx 470 8 GB 2 cards
Rx 470 4 gb 2 cards and
Rx 480 8 GB 1 card

But 2 Rx 470 cards are showing code 43 on asrock h81 R2.0

Tried
Defent all radon drivers
Pete file 16000MB to 33000 MB
Chaked changing all risers
Pcie power Gen1 and Gen 2
Disabled windows updates
Disabled hd audio on board

But till getting code 43 and unable to install drivers
Also tried manual update of driver from device manager but it showing best drivers already installed

Need help to solve this

[pyoc70]

My Asrock h81 R2.0

In Bios

In advance option

Advanced /choosey configuration

VT -d is showing unsupported

How can I unable it or make it supportive