I must say that Crysis Warhead is a fantastic game, better than the original. The gameplay is a lot more consistent and inviting however unlike you've heard elsewhere it is a tiny bit more demanding than the original Crysis. My mac pro specs: 2.8 GHZ Eight Core Intel Xeon Processors 2GB RAM 500 GB Hard Drive 2 Superdrives Nvidia GeForce 8800GT (Planning on upgrading soon) 30" Apple Cinema Display Boot Camp Partition with Windows XP Pro 32 bit Edition (Planning to upgrade to Vista- still reluctant to do so) On 1600 by 1900 all settings on GAMER (high in Crysis menu), 2X AA and 8X AF. I got a range anywhere from 13 to 32 FPS. Its quite demanding. The great thing about this new game is that it also allows you to turn on the graphics to very high in XP which the previous game didn't. Since the game got laggy at times, I plan on waiting till Apple ships an extreme gamers card which I need ie. something like GTX 280 or 4870 X2.