Well, I have an 8 pin adapter coming and I will try that when it arrives. It takes two power cables .. one is a 6 pin and one is a 8 pin. I only thought I would need to plug in one but I have to have both plugged in. I have a pretty new OCZ PS but it does not have 8 pin PCI-E plugs and EVGA did no supply adapters in the box which is insane but whatever. I have to wait 4-5 more days for an adapter to arrive now...blah