What is your definition of max settings? Most benchmarks, all the ones I've seen, do not turn on DoF in there very high settings benchmarks. They usually don't include PhysX either. Both of those will add to the required setup to play.
With the benchmark, with Max Settings, including DoF but not PhysX, I found my 6950's scored 42 FPS, without DoF it's about 56 if I recall. This is at a resolution of 1920x1200.
The actual game play isn't ever quite as demanding as the benchmark, from what I can tell. Even when you are in the area of the benchmark, there is far less going on.