I'm confused, so if a PSU has dual 12V rails it will run a 7800GTX fine with no problem? And the PSU I was looking at was at 34A. I don't want to be a cheapskate, and I don't want to kill my rig, but is there anyother PSU that will run my rig well that is cheaper, by the way I have no plans of going SLI. And I am probably going to get a more beginner case, I've read that larger PSU's don't fit without moving the top fan, and that the case isn't for beginners.