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 4830 fall a fair bit behind at these low FPS numbers.
World In Conflict
Under WIC we again see that the HD 4830 is around 15% slower than the HD 4850.
Left 4 Dead
Left 4 Dead while showing the HD 4830 slower, it's only about 10% behind this time.