One of the differences between the PCI-Express and AGP versions of this card are the power connectors on the rear. The AGP X800XT uses the standard 4-pin Molex that we are used to seeing everywhere else. However, the PCI-Express version uses a 6-pin connection for the power. Never fear, a conversion cable is included with the card in case your PSU (like mine) does not have the needed cable. Expect power supplies to have this connector down the road.



Link: OC Cafe