Accelerated support is provided for the Mach8 chips (by the XF86_Mach8 server), Mach32 chips (by the XF86_Mach32 server), the following Mach64 and Rage chips: GX, CX, CT, ET, VT, VT3, GT, RageII+DVD, RagePro (GB, GD, GI, FP, GQ), VT4, Rage IIC (GV, GW, GZ), Rage LT Pro (LD, LB, LI, LP), Rage LT, Rage XL or XC (GL, GM, GN, GO, GR, GS) and Rage Mobility (LM, LN, LR, LS) (by the XF86_Mach64 server). Unaccelerated support is provided for most of the above (except some early Mach8 and Mach32 adapters), as well the old VGAWonder series chipsets (18800, 18800-1, 28800-2, 28800-4, 28800-5, 28800-6) by the XF86_SVGA server with the ati driver. Accelerated support is provided for the Rage 128 chips by the XF86_SVGA server with the r128 driver.
Accelerated support is provided for Mach64, Rage, Rage 128 and Radeon chips by the "ati" driver, as is unaccelerated support for all of the others except the Mach8 and some early Mach32 chips.
All hardware supported in 3.3.6 is also supported in 4.2.1 except for Mach8 and some old Mach32 chips.