my system i am going to get. q6600 (will be heavily OCed) asus p5b deluxe mobo antec 900 case with all the fans in it 1 hdd to start an ati sapphire radeon X850XTX gpu then a few months after a 8800 gts 2 gigs 1x2 sticks of crucial balistix 8000 cathode lights x2 dvd burner. i went to a site to calculate the wattage. i think its wrong it sayed the system would take 1200 watts. i was planning on gettting a 600 watt psu but im not sure now. maybe a 750 would do it. it sayed the sytem i have now would need 436 watts and i have the tt tr2 430 watt psu and it runs. so idk if its right. sometimes it may freeze in a game so maybe it is right. but i dought 1200 watts is needed for my new build. let me know what u think. thannks.