Those concerned about lack of sharpness try unselecting AH Anti-Aliasing under Post Lighting (or turn Post Lighting off). If Post Lighting is on, then the GPU super sampling anti-aliasing is disabled, no matter what the GPU settings, and if you have AH AA enabled it appears to make use of something like morphological AA, which sort of just smooths the screen image, at screen resolution, thereby reducing sharpness below screen resolution. The various GPU AA settings do what is called multiple sampling (MSAA); they calculate multiple 2D pixels per screen pixel and then average them down to full screen resolution. In other words, they calculate the projected 2D image at an equivalent resolution higher than the screen resolution, then smooth down to screen resolution. They slow down frames per second though, due to all the extra calculations and if you don't select FSAA or adaptive MSAA, which are very slow, it does this only for the edges of 3D polygons and not for the interior textures.