Well I was looking around for a new graphics card and I have found that the best one that is not ridiculously priced (over $200..) is the Radeon 5770. I first only thought about the wattage requirement which was 450. Mine is a 500. I also used Newegg's psu calculator and it gave 449 with a regular motherboard and 475 with a high end motherboard (I'm not sure what qualifies for a "high end" motherboard..). I'm assuming the wattage is fine for this graphics card...my more recent speculation has been about the +12v which is only 28 amps. That being said, I'm also assuming that gpu's use the +12v. Should this power supply be enough: Ultra LS500 500W (also below ↕)?