So I went by frys today and they had a evga geforce 4800. I had been trying to pick up a xfx 5870 for weeks because I had a 100 dollar off card at frys. Seeing as how its seems to be difficult to pick these cards up I decided to just get this. So I get home and I notice this card has an 8 pin connector and a 6 pin. I had been use to the regular double 6 pin connections. ANyway I used the power cables that came with the card. I go to turn on the machine and a light goes on then quickly off. Worried that maybe something happened I plugged my trusty 8800 gtx back in and same problem... I think when i plugged the cables in that came with my fermi I used the wrong power connection from my power supply? Is it possible I killed my power supply or even shorted out my mother board? Im using a tough power 650 wat power supply.