Best PSU and wattage for my rig

Alfheim

Honorable
Oct 7, 2012
38
0
10,540
So I'm just about done building my AMD rig, I've already got the important parts but I have one question, How much wattage do I need???
FX8320
HD 7950
P.S. The 8320 is for overclocking. So I need to find out how much I actually need, not OC-ing RAm or GPu, just CPU.