Matrox Mystique G200
The G200 is Matrox' first fully AGP-compliant graphics processor. It's a 128-bit processor with two 64-bit buses (DualBus as Matrox calls it) which both can go up and down (unidirectional).
In general performance the Matrox G200 was not a bad card but it lacked good OpenGL support. Hot games from 1998 like Quake II use OpenGL and thus people bought faster 3D cards with better OpenGL support.
The G200 is released in two versions; the more expensive Millennium II and cheaper Mystique II.