me gonna go for a 550 to 600 watts for me new p4, but i am mawd, on satureday i ordered a 5" TFT module i gonna put in me bays (cost 240 euros, man, hard to get that stuff around here, ain't cheap ;D) i think 400 will be enuff for ya if ya don't do some serious overclocking and voltage modding ahh, got the same hdd as me good stuff , silent, fast and big. me's gonna review tha shidd soon ;D