Video cards (video boards / video display boards / graphics cards / graphics adapter) are physical hardware circuit boards that connect to the Motherboard. Video cards are also now being placed onto the computer motherboard to help bring the cost down on computers. When the video card is connected to a monitor, it serves as the visual link between you and your computer, allowing you to view and manage your computer's software data. A video card, also known as a graphics accelerator card, display adapter, or graphics card, is a hardware component whose function is to generate and output images to a display. It operates on similar principles as a sound card or other peripheral devices.
Video Cards must specify its video standards, allowing end users to know what video cards may or may not be capable of doing. With new computers, you will most likely find SVGA standard video cards, allowing you to run the majority of software applications as well as run at high resolutions.
Generally, most video cards shipped today are included with video memory. Video memory is built onto the video board and/or motherboard, allowing the video card to run at higher resolutions and run at more efficient speeds.
Video cards are most commonly found in the PCI slots; however, with the release of the Pentium II came the AGP (Advanced Graphics Port) support. This new type of slot was released on August 26, 1996. This new technology allows the card to run at 66 MHz, 32-bit bus. And now, commonly we use in the PCL-express slots to get better mark of graphic.
With the increasing popularity of advanced gaming came a new breed of video cards known as the 3D accelerators. When originally released, these cards only had support for 3D and not 2D and commonly required an additional 2D card to fully work. Today, 3D accelerators support both 3D and 2D, contains several MB of memory and processor on the video card.



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