integrated 135 MHz (325 and MX), 170 MHz (DX/GX/GX2) or 220 MHz (VX) RAMDAC and clock synthesizer S3 Streams Processor for accelerated video On-the-fly stretching and blending of primary RGB stream and RGB or YUV (video) secondary stream Each stream can have a different color depth Hardware-assisted video playback with horizontal interpolation Support for Indeo, Cinepak, and software and hardware-accelerated MPEG-1 video S3 Scenic Highway for direct interface to live video and MPEG-1 peripherals 2D GUI acceleration. (BitBLT, line draw, polygon fill) 3D texture mapping Perspective correction, flat and Gouraud shading. ViRGE/DX and later feature 'parallel processing' perspective correction for better performance Bilinear and trilinear texture filtering, MIP Mapping, alpha blending, and video texture mapping. Trilinear filtering is full-speed on ViRGE/DX and later, termed 'SmartFilter' technology. Depth cueing and fogging, Z-buffering 1600×1200 with 16 colors (VX), 1280×1024 with 256 colors at 75 Hz refresh, 1024×768 with 64K colors at 75 Hz refresh, 800×600 16.7M colors at 75 Hz refresh (these are the non-interlaced modes; higher color depths are supported with interlaced video) 64-bit DRAM or VRAM (VX) memory interface, 2, 4, and 8 (VX) MiB video memory, Single-cycle EDO operation Glueless PCI 2.1 bus interface and VESA VL-Bus (325) interface PCI bus mastering for display list processing and video capture support Drivers for major operating systems and APIs: Windows 95, Windows 3.1x, Windows NT, IBM OS/2 2.1 and 3.0 (Warp), ADI 4.2, Direct3D, BRender, RenderWare and OpenGL Full hardware and BIOS support for VESA Display Power Management Signaling (DPMS) monitor power savings modes DDC monitor communications 325 uses 208-pin PQFP package. VX uses 288-pin BGA package ViRGE 325 pin compatible with S3 Trio64V+ References Product Overview: S3 ViRGE Integrated 3D Graphics/Video Accelerator (PDF), S3 Incorporated, July 1996. Product Overview: S3 ViRGE/VX Integrated 3D Graphics/Video Accelerator (PDF), S3 Incorporated, July 1996. External links Diamond Stealth 3D 2000 Review with screenshots of S3D-accelerated games. Graphics cards