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A video card, also known as a graphics accelerator card, display adapter, or graphics card, is an expansion card whose function is to generate and output images to a display. Some video cards offer added functions, such as video capture, TV tuner adapter, MPEG-2 and MPEG-4 decoding, FireWire, light pen, TV output, or the ability to connect multiple monitors.

A misconception regarding high end video cards is that they are strictly used for video games. High end video cards have a much broader range of capability; for example, they play a very important role for graphic designers and 3D animators, who tend to require optimum displays as well as faster rendering.

Video cards are not used exclusively in IBM type PCs; they have been used in devices such as Commodore Amiga (connected by the slots Zorro II and Zorro III), Apple II, Apple Macintosh, Atari Mega ST/TT (attached to the MegaBus or VME interface), Spectravideo SVI-328, MSX, and in video game consoles.

Video hardware can be integrated on the mainboard, as it often happened with early computers; in this configuration it was sometimes referred to as a video controller or graphics controller.

The video BIOS or firmware contains the basic program that governs the video card's operations and provides the instructions that allow the computer and software to interact with the card. It may contain information on the memory timing, operating speeds and voltages of the graphics processor and RAM and other information. It is sometimes possible to change the BIOS (e.g. to enable factory-locked settings for higher performance) although this is typically only done by video card overclockers, and has the potential to irreversibly damage the card.

Open Drivers collect Display and Video driver for one-stop download, update and installation service. All Display and Video for Yuan, XGI, Voyetra, Village Tronic, VideoLogic, VIA, V-Gear, Typhoon, Tyan, Twinhan, Trident, Terratec, Tekram, SiS, SIIG, Sapphire, S3 Graphics, Prolink, PowerVR, Pinnacle Systems, PcChips, nVIDIA, MSI, Matrox, LifeView, Leadtek, Kworld, Intel, InnoVISION Multimedia, Hercules, Hauppauge, GigaByte, Genius, Gainward, Elsa, DisplayLink, Diamond, Creative, Compro, Cirrus Logic have been listed in Open Drivers. Drivers for Display and Video have been categorized by device manufacturers. The main driver developers of Display and Video can be listed.

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