As I said earlier, Graphics card is going to be your biggest decider on which games to play.

http://www.newegg.ca/Product/Product.asp...6819113285 This would make a good CPU and should run GTA5 (If it comes out) with most NPC settings maxxed.

http://www.newegg.ca/Product/Product.asp...6813128519 Looks like a suitable mobo. Good reviews and shoould be able to do what you need.

Everything else is up to you really. Case doesn't even matter some sort of 4x2gb ram setup and a power supply to match your gfx card. I'd wait though seeing as how AMD and Nvidia will be releasing new cards around christmas. Any of the new cards they release should be able to run just about any game maxxed out seeing as how the 7xxx and 6xx series cards are doing well.

You also have to realize that new cards are released about every 9 months. So you can either wait a few more and get a new series of card which will perform better for less or pick up a 7950 or 670 now which would also do well for a few years.