Cpu @125w, does it matter what psu I use?

[stefan_45]

If I have a cpu running at 125w do I need a psu that have an rail 3,3v @ 125w?

And if some one could explain what the different voltage rails goes to I would appreciate it!

 

[Dark Lord of Tech]

http://www.hardcoreware.net/reviews/review-338-2.htm
Older article , but explains the rails.