Call Of Duty Modern Warfare 2 Gameplay on HD 6770

COD MW2 runs at 75 FPs constant because I've got V-Sync turned on. My Configuration: CPU AMD Phenom II X4 955 3.2 @ 3.4 OC; GPU Sapphire Radeon HD 6770 1GB GDDR5 850/1200; RAM Corsair XMS3 2x2GB Dual Channel 1600 9-9-9-24; MB ECS A880GM-A3 AM3 Socket; HDD WesternDigital Caviar Blue 320GB SATA-II; PSU Konig 550W CPU Cooler CoolerMaster Hyper 212 Push-Pull (x2 CM SickleFlow Blue); Monitor LG FLATRON W1934S 19" 1440x900, 75Hz, 5ms; Mouse A4Tech X-710; Keyboard DeLUX K8070 Gaming;