I'm going to reiterate what some of the others have said. If you are building a gaming rig, stick with Intel. I have had AMD processors in the past and they were great, no issues at all. A few years back I switched to an Intel i5 3570k, put a decent fan on it, and have been running at 4000 MHz (3400 stock) ever since. This is still the CPU I have now and it has handled everything that I have thrown at it.
Spend the extra money, it's going to outlast an AMD chip two or more times over.