Benchmarks: Crysis, Crysis Warhead
Typically the Radeon HD 4000 series does not perform that well in Crysis when compared to the GeForce GTX competition, and this is evident when comparing the older Radeon HD 4870 and GeForce GTX 260 graphics cards.
The Radeon HD 4890 on the other hand does quite well, matching the GeForce GTX 275 at each resolution.
We ran the Crysis Warhead timedemo with anti-aliasing disabled, giving the GeForce card quite an advantage. The GeForce GTX 275 was 18% faster at 1680x1050, and 21% at 2560x1600. With anti-aliasing disabled the Radeon HD 4890 was at best only able to match the performance of the GeForce GTX 260.