re: Computer wont boot.. if it does, it freezes. Updated ***

You won't gain any game performance with a CPU upgrade unless you're playing particularly CPU-intensive games like Civilization and other RTS games, maybe. You need a better video card. That should be your next upgrade above everything else in terms of gaming performance. It's the weakest part of your build by a mile.

If you want to upgrade the CPU along with the GPU, get the 8320 or 8350. Of course, an SSD would also be nice to add on top of that.

You should've never even considered that CPU and GPU if you built this less than a year ago.