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
With AA and AF on we see the HD 4890 really struggle here with the card falling to the back of the pack.
World In Conflict
WIC performance with AA and AF on sees the HD 4890 fall a little behind the GTX 260. All cards except for the GTX 285 are under that 30 FPS minimum we want to see.
Left 4 Dead
Left 4 Dead sees the HD 4890 perform very well again with it out performing all the NVIDIA cards here.