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
We can see a good gain here, but unfortunately the HD 4890 does still struggle, though.
World In Conflict
We again see a good gain that equates to over 20%. Unfortunately we're just a bit below that 30 FPS minimum. Drop back the AF and move to 2x AA, however, and you'll fix that issue.
Left 4 Dead
Again we see that 20%+ increase in performance with the new card. With no minimum shown, though, we probably want to be closer to 55 - 60 FPS average for smooth game play, so we would probably recommend moving back from 8x MSAA to 4x.