The Stealthinator said:
The FX-series of CPUs aren't that great. It there is any bottleneck in your system, that would probably be it.
If you're looking to upgrade I'd recommend maybe an i5 or i7, if your budget allows.
Typical answer, his system is fine the way it is and shouldn't have bottleneck. Check you CPU usage during gaming and that will make you feel more comfortable with your build. My 8350 serves me well in all current games haven't seen CPU usage past 50%. Higher end 7970/680 will cause slight bottleneck without OC on the 8350. He didn't ask about upgrading so stop telling to spend more money when doesn't have too.