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.
Apart from something older like Street Fighter IV we do see the GTS 450 struggle when it comes to AA performance. The card isn't really designed for AA at these high resolutions; the maximum AA you could run would be at around the 1680 x 1050 mark, and even then it wouldn't be on all games.