Is this a good setup for a gaming pc?

Looks pretty good. When it comes to Intel vs AMD though, here is a site that benchmarks pretty much everything the processor is used for. It also includes some games.

http://www.anandtech.com/bench/Product/288?vs=102

This is a website with benchmarks from some more recent and demanding games:

http://www.xbitlabs.com/articles/cpu/display/amd-f...

As you can see, the intel blows that Phenom out of the water. If you dont want to future-proof your CPU for a bit, I would definately go with the intel. Even though it may cost almost double the price of the phenom you selected you definately will be set with that CPU for a while. EDIT: Ideally it would be an Intel i5 2500k, or even an i5 3570k Ivy Bridge (Ivy Bridge Will be slightly faster) but if you're a bit tight on cash I would still definitely go with an i3. You can see an i3 still beats the Phenom. Try going for a "k" model (EX: Intel i5 2500k) for easy overclocking, which you may want to do as games get more and more demanding. IMPORTANT: The motherboard you selected is not compatible with intel CPU's. AMD motherboards are only compatible with AMD CPU's and Vice Versa with intel, so you would have to pick a new one. No worries though, they run around the same prices. Just make sure the intel motherboard supports the i5 (wouldn't be a chance that a modern motherboard doesn't, but can't be too sure) and I recommend it also supporting the i7 if you don't want to upgrade your motherboard in the near future.

It's very good for gaming computer. You can play all genre game in the world.

Great gaming computer.