All of the above really... cpu, video card, ram, hdd's, optical drive, external devices, etc. This is a great site to calculate about how much wattage you will need. http://www.jscustompcs.com/power_supply/Power_Supply_Calculator.php?cmd=AMD


Denon 5803 Denon 3910 Axiom M80ti's, QS8's VP150, EP500's (7.2)