Benchmarking with Doom 3 can be very tricky. The game itself is limited to rendering only 60 fps by the game engine. This limit is removed however when running the benchmarking modes. This can make things a bit tricky for the benchmark results. The goal is to find a setting with the highest graphics that will still have just above the 60 frames per second for the best graphical experience.
The benchmark tests were conducted using the demo001 included with the retail release of the game using the Doom 3 console commands. All benchmarks were conducted with the high quality graphics settings and run multiple times to properly cache the graphics data. Auto overclocking modes were not included in the results because the game failed to render properly with it enabled.
Once again, the overall performance of the 7800 GTX is clearly significant over the speed of the 6800 GT board when in a single board configuration. The 7800 GTX is able to provide over 60 fps even with the 4x anti-aliasing and 8x anisotropic filtering enabled.
The SLI configuration is able to out pace the 7800 GTX in all settings. In this case, it would seem that the SLI configuration would be the more advantageous configuration but the 7800 GTX is still able to surpass the coveted 60fps mark.
