Call of Juarez
Call of Juarez does not support 2560x1600 resolution, so we have to limit our tests to 1920x1200.
The Radeon HD 4870 CrossFire is a real breakthrough in this game as it ensures comfortable average and minimal speeds at resolutions above 1280x1024! You can play quite normally even at 1920x1200 because the occasional slowdowns to 19fps shouldn’t be much of a trouble. Interestingly, the pair of Radeon HD 4870 cards is faster than the Radeon HD 4870 X2.
This is a clear victory for ATI. Nvidia cannot do anything about that because its GPUs do not have such tremendous computing resources which are so demanded by this game.
Call of Duty 4: Modern Warfare
Multi-GPU technology doesn’t work in this game, and the Radeon HD 4870 CrossFire is no faster than the single card whereas the 4870 X2 model delivers higher performance thanks to the larger amount of onboard memory.
Well, these solutions are still as fast as the GeForce GTX 280 at resolutions up to 1920x1200 inclusive. The single Radeon HD 4870 is only 15% slower than the more expensive card from Nvidia at 2560x1600 and provides a comfortable speed overall.