Support (accelerated) for the S3 911, 924, 801, 805, 928, 864, 868, 964, 968, Trio32, Trio64, Trio64V+, Trio64UV+, Aurora64V+, Trio64V2, PLATO/PX is provided by the XF86_S3 server and the XF86_SVGA server with the s3_svga driver. Support (accelerated) for the ViRGE, ViRGE/VX, ViRGE/DX, ViRGE/GX, ViRGE/GX2, ViRGE/MX, ViRGE/MX+ is provided by the XF86_S3V server. Support (accelerated) for those ViRGE chips, as well as the Trio3D and Trio3D/2X is provided by the XF86_SVGA server with the s3v driver. Support (accelerated) for the Savage3D, Savage3D/MV, Savage4, and Savage2000, is provided by the XF86_SVGA server with the s3_savage driver on some OSes (Linux, *BSD).
Support (accelerated) for the ViRGE, ViRGE/VX, ViRGE/DX, ViRGE/GX, ViRGE/GX2, ViRGE/MX, ViRGE/MX+, Trio3D and Trio3D/2X is provided by the "s3virge" driver. Support (accelerated) for the Savage3D, Savage3D/MV, Savage4, and Savage2000, is provided by the "savage" driver. Support for the other S3 chipsets has not yet been ported.
Only the ViRGE, Trio3D and Savage chipsets are supported in 4.0.3. All of the other chipsets are only supported in 3.3.6.