It’s not an easy handle motherboard and it took for a while for me to understand how to run it with 13 GPU. But once you set it everything correctly it runs quite good and stable.
You have to connect both power inlets (molex powwer sockets on motherboard). Otherwise there will be not enough power to run all 13 PCIE slots.
- First, Reset BIOS by removing BIOS battery (wait at least 30 seconds)
- Connect just one GPU to the x16 slot (longest one). Power up (push button on motherboard) and enter BIOS. Modify the values in BIOS as written below:
OC Tweaker\Voltage Conf:
PCH VoH: 1200 mV
VCCIO: 1200 mV
Above 4GB mmio: Enabled
All PCIE link speeds: Gen2
All ASPM Supports: Disabled
IOAPIC 24-119: Enabled
HD Audio: Disbaled
Reset Power Loss: power ON
-Save and exit BIOS
-Run your rig with only one GPU
- If everything seems OK (1 GPU is mining) now you can pass to stage for remaining 12 GPUs
-Restart it and enter BIOS. In Boot section disable CSM.
-Save and exit. When rebooted, cut the power before boot! (that’s important!!! -> If you let it boot with 9 or less than 9 GPU, CSM will be enabled automatically and you will not be able to run more than 9 GPU)
-Now connect all GPUs to the remaining x1 slots (short ones). Check that all GPU’s risers and power connections are provided and correct.
-Power on again and suddenly All 13 GPUs should be recognized and work without any problem.
One important point!: If number of connected GPUs drop to below 10, CSM will be enabled automatically and it will not boot. In this case you have to clear BIOS again by removing BIOS battery, wait 30 seconds and start everything from beginning.