Performance in Synthetic Benchmarks
Futuremark 3DMark05 build 120
The performance difference between the PowerColor X1900 XT working at its nominal frequencies and GeForce 7900 GTX is only 168 point in Nvidia’s favor. Overclocking helps PowerColor solution to get ahead, but its still fails to reach the next performance barrier, which is only 244 point away.
PowerColor X1900 XT working at its nominal speed outperforms GeForce 7900 GTX in all resolutions, although the advantage is very small and doesn’t exceed 1fps.
The Game 2 test is less demanding to the fillrate therefore GeForce 7900 GTX leaves PowerColor X1900 XT behind only in 1024x768. In 1280x1024 the performance of these two cards levels out, and as the resolution increases even more the PowerColor solution starts getting ahead of the rival. When overclocked, PowerColor X1900 XT wins in all resolutions.
The performance in Game 3 3DMark05 test is directly dependent on the pixel shader processing speed. Radeon X1900 graphics card family is an indisputable leader in applications like that because they have 48 pixel processors onboard. So, the 4%-10% advantage of the PowerColor X1900 XT over GeForce 7900 GTX is quite logical. The latter manages to perform quite well thanks to high texturing speed ensured by 24 TMUs it has.
The results of the individual Game tests do not really prove the total scores we have seen above, because the results of the Game tests were obtained with enabled FSAA and anisotropic filtering. In the latter case, especially in high resolutions, ATI Radeon X1000 graphics cards are usually faster than the alternative Nvidia solutions thanks to a more efficient ring bus memory controller.