Post
by skier » Sun Apr 04, 2010 3:22 pm
note that power supplies have three basic voltages that combined add up the total wattage listed, 3.3v+ 5v+ and 12v+ (and a 12v- and 5v- but those dont really count for anything important) what you want to look for in a unit is to have a lot of amps on the 12v+ rail(s) as cheaper units inflate the 3.3v and 5v rails to get their wattage rating, but very few items use those voltages, while almost every PC part uses the 12v+ source
>35 Amps on the 12v+ lines is usually good enough for most users, but it depends on your parts(better graphics cards need more amperage, so high end GFX ~GTX 280, GTX 260 lets say need 50A ; and budget cards ~GT220, GT 240, GTS 250 would need power in the 30-40A range)
for power supplies: Quality over quantity every time.
-Austin

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