FiringSquad has taken a look at the image quality of ATI's Super AA and NVIDIA's SLI Anti-Aliasing.
Some cynics may wonder why the need for such insanely high AA modes. After all, when combined with a high screen resolution such as 1600x1200/2048x1536 for 20”+ LCD/CRT users, and 1680x1050 or 1920x1200 for widescreen LCDs, 4xAA looks pretty good already. But “pretty good” isn’t enough for some gamers. In addition, some games need all the help they can get to combat jaggies. Racing/sports titles for instance, as well as flight sims and some shooters where most of the combat takes place in brighter environments where jaggies are more apparent. Examples of this would include Counter-Strike: Source and Battlefield 2.