3DMark05 is not so easy for GeForce 6/7 architectures, which you can clearly see from the summary graph. Although GeForce 7800 GT manages to outpace RADEON X850 XT Platinum Edition, the performance advantage is not very big, only 168 points, despite more pixel pipelines, enhanced ALU and Shader Model 3.0 support.
Game 1 test represents a scene from a typical science-fiction shooter. It uses bump mapping by normal maps and per-pixel lighting alongside with dynamic shadows with high-resolution depth maps. It is not as complex as, say, the Game 3 test from the same set, so the advantage of our GeForce 7800 GT over RADEON X850 XT in pure speed mode is not that great, although it increases as the resolutions grows up. As for the eye candy mode when FSAA and anisotropic filtering are enabled, the situation is completely different: GeForce 7800 GT appears 25%-35% faster than the rival!