Diamond Edge 3D 2120 PCI Video Card STG2000 VGA TV Tuner Multimedia 1995

Diamond Edge 3D 2120 PCI Video Card STG2000 VGA TV Tuner Multimedia 1995

The Diamond Edge 3D 2120 is a mid-1990s PCI multimedia video card from Diamond Multimedia, built around the STMicroelectronics STG2000 graphics controller (also known under the SGS-Thomson branding). Released in 1995, it combines 2D/3D graphics acceleration with multimedia input capabilities — including a coaxial/RJ video input and stereo 3.5mm audio jacks on the bracket — making it one of the early all-in-one multimedia cards of the Windows 95 era. Video output is via a standard DB-15 VGA connector.

Specifications & What's Included

• Brand: Diamond Multimedia
• Model: Edge 3D 2120
• Copyright date (PCB silkscreen): 1995
• Bus interface: PCI (full-height card)
• Graphics controller: STMicroelectronics STG2000 (SGS-Thomson)
• Secondary ST controller chip also present on PCB
• Video output: VGA DB-15 (analog)
• Bracket ports: RJ video/cable input, 2× 3.5mm audio jacks (line-in / audio out)
• Internal header connectors on PCB (feature/CD-audio connectors)
• Card only — no software, cables, or documentation included

Applications

The Diamond Edge 3D 2120 was designed for mid-1990s Windows 95 and DOS desktop PCs as a combined graphics accelerator and multimedia capture card. The STG2000 chipset provided hardware-assisted 3D rendering and 2D acceleration at a time when dedicated 3D accelerators were just entering the consumer market — predating the widespread adoption of Voodoo and later NVIDIA/ATI chipsets. The multimedia inputs allowed users to connect cable TV, VCR, or composite video sources directly to the PC for capture and display. This card appeals today primarily to vintage PC enthusiasts and collectors building authentic mid-1990s Windows 95 or DOS gaming rigs, as well as those restoring period-correct multimedia workstations of that era.