ASRock H81 pro btc problem with 5 GPUs

[Jdope]

Hey guys,


I have an original ASRock h81 pro btc (not the Rev 2.0) and i'm trying to boot up more than 4 GPUs and its just refusing that, the GPUs are all nvidia gtx 1080, i remember booting up to 6 rx 470s without a problem but with the 1080s only 4 ever work, anyone faced this before?

[1715315355]

1715315355

[1715315355]

1715315355

[BTC22]

What size is your PSU?

[manji]

try on check pcie slot, riser usb. could be a power shortage from or to the riser usb. or less power psu.

[Jdope]

I have dual 750w PSUs, the cards actually all boot well, they boot to windows and do fine but only 4 of them get recognized, the other one (whichever card it is or whichever riser/pcie slot it is) just doesn't

[CryptoWatcher420]

I have dual 750w PSUs, the cards actually all boot well, they boot to windows and do fine but only 4 of them get recognized, the other one (whichever card it is or whichever riser/pcie slot it is) just doesn't

ya know I have one of the older h81 pro btc motherboards as well and its slots got some good use from me taking that little adapter in and out, it wasn't much but it was enough I started having issues with one of the x1 slots not picking up a gpu, just some food for thought, the x1 slot does still work I just have to play with it a little

[Rhego]

I have 3 owner on hand. and I've used it for a long time without any problems. Such problems are usually caused by risers or power supply devices. You do not need to make any settings for the device bios.

You can watch the video.

https://www.youtube.com/watch?v=0IaeBPmtK_4

I have Asrock H81 Pro btc mobo 6x Asus EXP RX 570 and 2x FSP Hydro 750W BRonze +80 PSU

[Jdope]

I have 3 owner on hand. and I've used it for a long time without any problems. Such problems are usually caused by risers or power supply devices. You do not need to make any settings for the device bios.

You can watch the video.

https://www.youtube.com/watch?v=0IaeBPmtK_4

I have Asrock H81 Pro btc mobo 6x Asus EXP RX 570 and 2x FSP Hydro 750W BRonze +80 PSU

Yeah that's the Rev 2.0 version, I have the older one.


I got another riser and I'll try to play with it tommorow, thanks all