The parts you'll need are listed below and they are all guaranteed to work together.
This one is made for the AMD processors, like we're going to be using. The Motherboard also includes audio input/output, several USB ports, and network input (for the ethernet cable).
Processorintel i7 for extreme power but then it will start to get expensive, and then you'll need a different motherboard too.
8gb memory is good enough for gaming. This corsair pair (2x4gb) is a gamer's choice. The motherboard we're using can hold up to 4 of these, so it's very upgradable.
And you don't want to run out of battery in the middle of a game.
Total =$564.29This build does not include a monitor and assumes you have a TV to connect for gaming. Or that you have a monitor already. If you need to purchase a monitor and still wish to keep the total under $600 I recommend going for a bit cheaper version of the processor, the Phenom II X4 , and a 250gb harddrive instead. And maybe a 'regular' mouse/keyboard. Then you could get one of these 17 inch monitors. That's a good enough size for gaming, in my opinion, to get the full 1080p experience.