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.
Far Cry 2
The HD 5850 doesn't perform well under Far Cry 2 with AA and AF on. While it offers a good gain when compared to the HD 4890, the number is still low for it to be considered playable.
World In Conflict
A nice little jump on the HD 4890, but not quite enough for WIC to be playable at these settings with this card. Unfortunately we're a good 4 FPS below that 30 FPS minimum we want to see for smooth game play.
Left 4 Dead
Like our non AA tests the HD 5850 performs strong under L4D here with it coming second only to the HD 5870.