Serious Sam 2

Shaders in Serious Sam 2 contain a lot of texture fetches (up to 8) which is one of the main reasons why the game is predisposed to the GeForce 7 architecture. The computational pixel processors of Radeon X1800 and X1900 cards are just idle most of the time here. As a result, the Radeon X1900 CrossFire is only faster than the single GeForce 7800 GTX 512 in 1024x768 and 1280x1024 resolutions. You could bet safely a SLI configuration with two GeForce 7800 GTX 512 would leave no chance to the new solution from ATI in this test.

The gap between the Radeon X1900 XT CrossFire and the Radeon X1800 XT CrossFire doesn’t grow up in higher resolutions as in the previous tests, but on the contrary, gets narrower. With a min speed of 25fps and an average speed of 55fps, the Radeon X1900 XT CrossFire allows playing the game comfortably in 1024x768. This is quite a nice result, considering the complexity of the application.

The average performance of the Radeon X1900 XT CrossFire drops but slightly, but the min speed is below 25fps, making it uncomfortable to play with enabled 14x Super AA. The Radeon X1800 XT CrossFire is less than 10% slower than the newer platform.

Unreal Tournament 2004

There are still problems with the performance of Radeon X1900/X1800 in Unreal Tournament 2004 . This is especially conspicuous in resource-consuming FSAA modes, probably due to the low texture fetch speed again.

We also suspect the SLI AA 16x mode works incorrectly in this game as the results in this mode don’t almost differ from those with SLI AA 8x.