+- hashcat Forum (https://hashcat.net/forum)
+-- Forum: Deprecated; Previous versions (https://hashcat.net/forum/forum-29.html)
+--- Forum: Old oclHashcat Support (https://hashcat.net/forum/forum-38.html)
+--- Thread: PCIE question/Issue (/thread-4433.html)
PCIE question/Issue - robertf - 06-13-2015
Hi
I have a Z97X-Gamning 5 board and have 4 GPU (HD7970) running nicely in x16 slot and the 3 x1 slots in Utbutu 14.04
Problem is when I add a 5th GPU to PCIE x4 it turns off the x1 slots I know that but cant seem to over ride it in the BIOS, but when I add another GPU to the remaining x8 slot the machine wont boot.
Any pointers...
Cheers
Rob
RE: PCIE question/Issue - epixoip - 06-14-2015
Your motherboard likely doesn't support using all of the slots at once. Many boards we've tested in the past only support 4 GPUs. Other possible issues: you do not have enough PCI-e lanes on the CPU and your board doesn't have a PLX chip; you do not have 64-bit PCI-e addressing enabled in the BIOS, or your BIOS does not support 64-bit PCI-e addressing.