Half-Life 2: Episode Two
The Radeon HD 4870 CrossFire wins this test, enjoying a 20% advantage over the GeForce GTX 280 at 2560x1600. There is no big difference between the Radeon HD 4870 CrossFire and the Radeon HD 4870 X2 in this test.
S.T.A.L.K.E.R.: Shadow of Chernobyl
The game doesn’t support FSAA when you enable the dynamic lighting model, but loses much of its visual appeal with the static model. This is the reason why we benchmarked the cards in S.T.A.L.K.E.R. using anisotropic filtering only.
Although the game is optimized for Nvidia’s hardware, the Radeon HD 4870 CrossFire subsystem is in the lead across all the resolutions, including 2560x1600. The bottom speed is as high as 60fps at 1920x1200 and over 30fps at 2560x1600. The GeForce GTX 280 can’t achieve that.
Interestingly, the 4870 CrossFire configuration is far faster than the single-card flagship from AMD/ATI at 1600x1200 but not in any other resolution.