Quake 4
There is a mere 3fps of difference between the RADEON X1800 XT CrossFire and the GeForce 7800 GTX SLI, their absolute speeds being somewhere around 110fps. You can note that the efficiency of SLI technology is somewhat higher in this case.
The RADEON X1800 XT CrossFire and the GeForce 7800 GTX SLI platform both deliver a high enough performance at 8x FSAA, but the ATI platform is much faster, being equipped with more of graphics memory.
And like in the previous case, the RADEON X1800 XT CrossFire makes all the resolutions playable, even 1600x1200, and its performance is never slower than 85fps, while the GeForce 7800 GTX SLI only allows using 16x SLI AA in 1024x768.





