I have an XFX 7800gt. That's the UDE7 model, not the UDF7. The UDE7 is black, and has a molex power connector instead of a pci express connector. It's convenient since the SN25P power supply doesn't have a pci express power connector. It's stable, and I haven't had any of the problems other people seemed to be having with their cards not getting enough power. It runs nice and cool too, idling at around 48C.