Support (accelerated) for the MGA2064W (Millennium I), MGA1064SG (Mystique), MGA2164W (Millennium II) (PCI and AGP), G100, G200 and G400 is provided by the XF86_SVGA server with the mga driver.
Support (accelerated) for the MGA2064W (Millennium I), MGA1064SG (Mystique), MGA2164W (Millennium II) (PCI and AGP), G100, G200, G400, G450, and G550 is provided by the "mga" driver.
All hardware supported in 3.3.6 is also supported in 4.2.0. The G450 and G550 are supported only in 4.2.0.