i recieved a 480 today off a tpu member and plugged her up, it ran fine through vantage and only hit 74c while running it with the fan @ 68% (forced) and i thought woop as i got a P22k score over my last 18K on my 460 and couldnt wait to get into some BC2, i joined a server and just as i hit "join squad" the computer turns off..it tried to turn itself back on and the trip in the psu went i didnt oc the card AT ALL, things i tried: Reseating GPU numorous times , checking cables checking the pci slot to make sure it was ok and i hadnt somhow nocked it? clearing the Cmos ive got my 460 in it now running flawlessly so it isnt the motherboard etc surely? im not gonna take the card apart as it still as warrenty i believe with the original owner who is trying to help me now and is real top bloke in my opinion. props guy. any ideas? edit: PSU = XFX 750watt black edition with a silver 80+ rating and 62amps on the rail.