Serious Sam 2

The efficiency of CrossFire is only about 40%, but the performance gain from SLI technology isn’t bigger than 40%, either. What’s more, the CrossFire configuration made of two RADEON X1800 XT cards is only ahead of the single GeForce 7800 GTX 512 in 1600x1200 resolution. If we had two such cards in the SLI platform, we’d surely get the highest results and a comfortable game speed in resolutions above 1024x768 which are not available to owners of a RADEON X1800 XT CrossFire subsystem.

These numbers are of purely theoretical interest, yet the twofold lag of the GeForce 7800 GTX SLI is a fact.

The GeForce 7800 GTX SLI can’t give you more than 20fps with turned-on 16x SLI AA, but the minimum speed of the RADEON X1800 XT CrossFire is very low here, too, and it means you won’t be able to play the game comfortably using 14x Super AA. Can the upcoming R580 make it possible?