...GeForce 8800 GTS? My computer specs are http://h10025.www1.hp.com/ewfrf/wc/docum...26&lang=en As of now I haven't upgraded anything as it's a new computer. I plan to get the GeForce 8800 GTS (640mb), but first I need a new power supply. What would be the best at a low price? Also, is there a difference between XFX's and Evga's GeForce 8800 GTS? If so, which is best?