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.
Some video cards offer added functions, such as video capture, TV tuner adapter, MPEG-2 and MPEG-4 decoding, FireWire, mouse, light pen, and joystick connectors, or even the ability to connect multiple monitors.

Here you can find models like: nVidia 9800, nVidia 8800, nVidia 8600, nVidia 280, nVidia Geforce 8800 GT, nVidia 8600GT and nVidia 9600.
nVidia Video Cards have also this kinds: nVidia Geforce, nVidia Quadro and nVidia Motherboard. It can be also found in follow categories: nVidia AGP and nVidia PCI.