High Quality AA and AF
Our high quality tests let us separate the men from the boys and the ladies from the girls. If the cards weren't struggling before they will start to now.
We can see turning on AA and AF brings both cards to their knees and gives us very little between the two.
Half Life 2 (Episode One HDR)
We get a similar picture here with only a few FPS separating the two cards and the 8800GT performing almost twice the speed.
Lastly we see Prey continue with the same pattern we saw above.