Originally Posted by wiouxev
ALSO: To those having trouble with the PCI-E Riser cables:
I can verify the 3M cables WORKED for me!! I am reiterating the fact that it seems like the 3M pci-e risers are the ONLY ones that work reliably with more than 1 GPU.
Struggled with the Thermaltake cables. Bought an Extra one waited forever for it to arrive, just to plug both in and have issues.
When using just one cable everything seemed fine, when using both I experienced weird and wonderfull issues. Even disabling the PCIE slot from Mobo DIP switch did not resolve.
Got 2 x 3M PCIE Cables, arrived a week later and all problems disappeared.