Performance in Synthetic Benchmarks
The Radeon HD 4870 X2 didn’t set any new records in 3DMark06 but this version of the benchmark is not really difficult for modern graphics hardware. The card of such tremendous potential as ATI’s new solution just cannot show its full strength here. So, it is always slightly worse than the Radeon HD 4870 CrossFire tandem in every overall score, but those scores are obtained at 1280x1024 without FSAA.
The individual SM2.0 tests agree with the overall scores: the Radeon HD 4870 X2 is somewhat slower than the Radeon HD 4870 CrossFire, but the difference is very small.
The same is true in the second SM3.0/HDR test while in the first test the two solutions from ATI equal each other with a difference of only 0.3fps.