I am buying a new motherboard with 805D CPU. Also looking to upgrade my old crappy power supply to a one that would give me plenty enought power, 500+watts preferably. Now since I am NOT getting a really brand new motherboard, because I am looking at ones that have AGP slot for my 6600GT, I believe a single good rail PSU would do better rather than dual. What are best choice in picking a PSU, budget is no more than 100 dollors? Any advice help.