Hm... I was just under the impression that because the 5770 draws roughly 207W under load, (http://www.tomshardware.com/reviews/radeon-hd-5770,2446-15.html
) which equates to 17.25A, one 12v rail on my PSU isn't capable of powering that. (Given that the 5770 only uses one PCIe connector.) Correct me if I've made a mistake somewhere.