Hello I thought i would like to point out tht i switched from a 9800GTX+ 512 MB to a ati Radeon HD 4870 1 GB GDDR5 and saw a massive inprovement I got a 24% increase in Crysis Warhead Enthusiast settings all and 42 frame avg. Also Maxed Settings on ny other game my resolution is 1650x1080. My specs are

Cpu: Intel Core 2 Quad Q8200 @ 2.3 OC to 3.2 Air Stable 47c

Ram: 8 gigs of OCZ 2 6400 800 Mhz

HD: 1 TB Western Digital

Video Card: Ati Radeom HD 5870 1 GB GDDR5

PSU Coolermaster 750

Motherboard: ASUS P5Q Pro Turbo