Prey is the latest title to be released using the Doom 3 engine, and since we have learned how to tweak the engine a bit more since then, it makes sense to include this major title in our testing suite.
Since this game is based on the Doom 3 engine and uses OpenGL instead of DirectX, there are no performance limitations to take into account in our testing and gameplay.
While the 1600×1200 resolution is a dead heat between all three configurations, the 2048×1536 resolution opens up a bit. The single 7950 GX2 is lagging behind both of the SLI configurations; even more so than I initially expected. Quad SLI is able to pull a 57% lead over the single 7950 GX2 and more than double the minimum frame rate. Playing Prey at 2560×1600 with 4xAA and 8xAF turned on is not only damn impressive, but more than possible with the Quad SLI rig. With an average frame rate of 58.1, more than 100% faster than the single 7950 GX2 and 19% faster than the 7900 GTX SLI combo, and minimum frame rates of 42 FPS, the Quad SLI setup is able to blaze through this game with ease.