The rails on this PSU look very beefy, and the breakdown shows that most of the power comes from the 12v rails (Certain manufacturers cheat the wattage ratings of their PSU's; by pushing up the 3.3v and 5v rails to amounts that will not be used in modern computers as modern computers need lots of power on the 12v rail. And this power supply has plenty of 12v juice).



Link: Xtremecomputing