this is customizable but with the stuff in ti now it comes out to $794 so i think it will be good for you it should handle the new games pretty good but on some games you might have to play on medium settings.
http://www.ibuypower.com/ibp/store/c...r.aspx?mid=108 this one is the 1 i think you will like but you can also check out that whole site it is perfect for people like you who want gaming comps but but dont want to build them