My current PC specs are: Intel Core i5 650 (3.2ghz) with integrated graphics, 6GB DDR3 RAM, Intel DH55HC board, and a 500GB Hard drive. I am planning to buy an AMD Radeon HD 7770 1GB GDDR5 graphics card. I plan to play games like Battlefield 3 and COD Black ops 2, GTA, Crysis 3, etc all on 720p...