Ok guys i just went and got all the empty boxes for my comp components and power specs for N9600Gt video cards says need minimum 400Watts and minimum 25Amps on 12volt rail. Power supply is 620Watts, 700Watts peak 12 volt rail 19Amps max, bear in mind there are 2 video cards then psu might not be good enough.. So with 2 video cards, 1 dvd drive, 1 sata h/d, 1 dominator memory fan, 1 cpu zalman cnps 9700 fan, 2 fans in shark case, and audio card what size of psu should i be using.. Thanks again. Holbay.