Hello,
I have a strange problem with AMD rig.
The same set up was working just fine for months before the summer time. Then I have stopped the rig for ~6 months. Now when I turned it on, I face the problem below.
Setup:
Asrock H110 Pro BTC+
8 x XFX RX580 4GB
2 PSUs - EVGA 850W
OS: Windows 10
Mining SW: Phoenix 5.1c
Overclock SW: OverdriveNtool
When I turn on the rig, all card are recognized and start mining as expected, except the 1st card (in PCIE (x16) slot 1). The hashrate for it is very low - 1,4 MH/s.
- My monitor is plugged in the same card. If I connect it to another card, obviously Windows won't boot. If I use dummy HDMI plug - the problem is still there.
- If I swap the USB cables (at the MB side) between PCIE 1 (x16) and 2 (which was working OK) - same story => it should not be a raiser issue.
No matter if I set the miner to use 1, 2 or all 8 cards - the card in Slot 1 (x16) will have only 1,4 MH/s
Tried setting up the PCIE Gen from the Bios to Auto and Gen2 - makes no difference.
Any ideas what may be going wrong?
Available GPUs for mining:
GPU1: Radeon RX 580 Series (pcie 1), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU2: Radeon RX 580 Series (pcie 2), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU3: Radeon RX 580 Series (pcie 3), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU4: Radeon RX 580 Series (pcie 4), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU5: Radeon RX 580 Series (pcie 5), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU6: Radeon RX 580 Series (pcie 10), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU7: Radeon RX 580 Series (pcie 14), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU8: Radeon RX 580 Series (pcie 15), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU1: 58C 44% 54W, GPU2: 62C 55% 71W, GPU3: 62C 53% 68W, GPU4: 61C 53% 70W, GPU5: 63C 54% 68W, GPU6: 62C 54% 71W, GPU7: 61C 52% 73W, GPU8: 61C 52% 69W
GPUs power: 545.5 W
GPUs: 1: 1.443 MH/s (0) 2: 29.151 MH/s (1) 3: 29.151 MH/s (0) 4: 29.157 MH/s (0) 5: 29.119 MH/s (0) 6: 29.167 MH/s (0) 7: 29.139 MH/s (0) 8: 29.089 MH/s (0)