The S3 Graphics Twister is a series of graphics chips produced by S3 Graphics, a division of VIA Technologies. The S3 Twister was commonly used in older desktop computers, particularly in the late 1990s and early 2000s. It was part of the S3 Graphics Savage and S3 Graphics Twister families, which were designed for 2D and 3D graphics acceleration on Windows-based systems.

A S3 Graphics Twister Windows driver is a software package that enables the operating system (Windows) to properly communicate with and utilize the S3 Twister graphics hardware. This driver ensures that your graphics card functions correctly with applications, games, and video playback, providing support for various display resolutions, color depths, and 2D/3D acceleration.