If you noticed it, you pay too much attention, as there is no true reason its there. Its got lots of memory, as I stated before, which allows for really large textures. In fact, the Voodoo5 claims 2048 x 2048 textures, at 32-bit color. A 24-bit floating point depth buffer corrects the annoying aspect in certain situations where something that shouldn t be seen is, and vice versa. No more cheating in games by accidentally seeing the bad guy through the wall.
Stencil buffers allow for the card to simplify the drawing of complex shapes, like shadows.
This means that you can take your puny 27 inch monitor, and make everything on the screen look like ants. Make it so that you have difficulty reading that 30 point font. DirectX, OpenGL, and Glide. It of course has the T-Buffer. Aside from the MPEG-2 hardware assist, it also does DVD hardware assist, which is pretty much the same thing.