The review rig's auto-detect settings, with 3.0GHz P4, 1GB of RAM, and a GeForce 6800GT OC at 1024x768, had 4xAF (anisotropic filtering, to make textures look nicer), but no AA. (I was able to sneak 2xAA in, but I don't know if the game would perform well across the board with that).
Soft shadows were also off, but almost everything else was cranked to the max, and the benchmark ran at an average of 39 frames per second