I just wanted to let everyone know I just got a new Palit GTX 460 Sonic Platinum and it worked great as a drop in replacement for my 8800GTS my scores in Windows 7 only went up from 5.7 to 5.9 but I am assuming that is because of my crappy CPU (E6600, yes the dual core one). Anyway I also wanted to let you guys know that my 430 watt Antec Trupower 430 handled it's load just fine even though it says it needs a 450W power supply.
I was going to buy a new motherboard/cpu and case at Microcenter but nobody was around to help me so I just bought the video card for now =)
The truepower series are Antec's premier line arent they? If so they'll be much like Corsair's HX line in that they can go a bit higher than they are rated to hence why your machine is operating fine. Any lesser grade of PSU and i'd get worried.