Crysis Warhead updates and refines the gameplay of the original game through a sidestory plot involving Psycho, one of previous protagonist Nomad's allies. The game is a parallel story that follows Sergeant Michael "Psycho" Sykes, a character from the original Crysis, as he faces his own trials and challenges on the other side of the island during the time period of the first game.
It also showcases a new, enhanced and optimized version of CryEngine 2 using full DX10 extensions and is the first game developed by Crytek's Budapest studio.
We can see here that the HD 5850 CF setup is putting out some good numbers. The HD 5770 CF one also does a good job, but it does fall a little under that 30 FPS minimum at 1920 x 1200. However, the gains are extremely impressive when compared to the single card solution.