Answer:
Video cards (also called Graphics cards) are used to display images from the computer to a monitor.Without a video card you would have no way of connecting a monitor to a computer unless the motherboard had a built in graphics chip.The more video ram a card has and the faster it is the better it will work,making video intensive programs such as games run faster and look better.A good video card will also make video editing & playback programs run smoother and work faster.