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.
The HD 5870 offers some decent performance against the GTX 285 at 1920 x 1200. At the other resolutions there isn't much of a difference. With that said, though, it does manage to pull out a win against the NVIDIA card. Compared to the GTX 295, however, the HD 5870 does fall a fair bit behind here.