Performance in Synthetic Benchmarks
Futuremark 3DMark05 build 120
GeForce 7900 GT didn’t manage to outperform Radeon X1800 XT, which is quite logical, but it did leave Radeon X1800 XL far behind. Speaking about multi-GPU tandems, the SLI configuration built of two GeForce 7900 GT has certainly yielded to Radeon X1800 XT CrossFire, but the performance difference was less that 1000 points. It is a very good result, keeping in mind the difference in clock speeds, amount of onboard graphics memory, different price and power consumption of these two solutions.
In Game 1 test Radeon X1800 XT outpaces GeForce 7800 GTX and the new GeForce 7900 GT by about 10% in all resolutions. The corresponding multi-GPU configurations however yield quite noticeably to Radeon X1800 XT CrossFire only in 1600x1200, where work with the memory subsystem matters the most.
It is for exactly the same reason that Radeon X1800 XT CrossFire defeats GeForce 7900 GT SLI and GeForce 7800 GTX SLI in SLI AA/Super AA modes. Although here we have to point out that the performance difference is big enough only when we enabled SLI AA 16x/Super AA 14x. As you remember, ATI graphics cards find themselves in a more advantageous situation, because the anti-aliasing methods of the Super AA 14x mode eat up considerably less resources than those employed y Nvidia in SLI AA 16x mode.