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Title: 7 GPU rig - one GPU running at 4 Mh/s (M.2 problem?) Post by: brokenarrow2 on August 09, 2017, 11:13:41 PM I got a Asus Z270-P with 7 RX 570 cards, and when I run them all, one GPU has just 4 Mh/s hashrate.
One of them is on the M.2_2 slot, and this also happened when I had only one card connected to the M.2_2 slot. When I moved it, it was full speed. My M.2_2 settings is set to PCIe, but I tried auto to with no difference. I tried to disable everything that I don't use, including all SATA-ports but one, using SATA6G_4 at the moment. Tried 1 and 2 also. I read something that M.2_2 shares something with SATA6G_1, but this doesn't seem to make a difference, since I'm using _4 now. I also disabled audio, yet i see three devices called "Audio Device on High Definition Audio Bus". Not sure where that came from, started showing up recently, and maybe they interfere? I tried again, with nothing on the M.2_2 slot, all other cards on the PCI-slots, and it seems like the slow card is on PCIEX1_1, next to the M.2_1 slot. Are they in conflict? Any clues or steps to figure this out? Title: Re: 7 GPU rig - one GPU running at 4 Mh/s (M.2 problem?) Post by: panda2k_Storm on August 10, 2017, 02:29:11 AM I would recommend you return the board if possible and get the Z270-AR. Works with 7 GPUs without the use of a M.2 slot. BitsBeTrippin has a video on how to setup the BIOS for it.
Title: Re: 7 GPU rig - one GPU running at 4 Mh/s (M.2 problem?) Post by: o00o on August 10, 2017, 02:58:59 AM Connect a display to that particular card.
Title: Re: 7 GPU rig - one GPU running at 4 Mh/s (M.2 problem?) Post by: ssdaytona on August 10, 2017, 03:16:23 AM your m2 to pcie adapters do not need a separate power supply. just leave it unconnected.
I have 8 gpus working just fine on my z270-p Title: Re: 7 GPU rig - one GPU running at 4 Mh/s (M.2 problem?) Post by: brokenarrow2 on August 11, 2017, 04:36:25 AM Thanks for your replies. The solution was to connect the HDMI-cable to the card connected with a riser to the PCIEX16_1 slot, then I got full speed on all of them!
Title: Re: 7 GPU rig - one GPU running at 4 Mh/s (M.2 problem?) Post by: faxxer on August 11, 2017, 06:05:43 AM Don't connect any display adapter there, use remote access such as Teamviewer, RDP to tunnel in.
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