Are you considering upgrading to an FX 8320? 600w would be enough.
Yes I am upgrading. I bought the FX 6300 as a place holder until I had the money for a new one. I was going to get the 9370, but then I realized it was unnecessary, because I am already running every game maxed out, at 35-45 fps. My CPU gets really hot, because it is a cheap one. Only paid around $90 for it.
I can get 60fps, but my processor van't handle CPU intensive games.