What Is a Computer Video Card?
A video card is the output device that sends a signal from your computer to your monitor. It translates what you do on the computer into what you see on the screen.
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Onboard Video
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Many desktops and all laptops come with onboard video. This means that the video card is part of the motherboard and uses the motherboards RAM. These cards are usually not as powerful as add-on cards.
Add-on Cards
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Add-on cards use one of your computers expansion slots. These cards often have more features than onboard cards.
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Video Memory
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Video memory is where the video data is stored. More memory and faster speeds produce sharper video and fast processing for 3D graphics.
Output Types
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There are three major video output types on today's computers. VGA is the 15 pin connection found on most computers. DVI is slightly larger connection that is used for high-definition connections. S-Video, which is found on some computers, is a round 9 pin connection which can connect to some televisions.
Other Features
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Some video cards come with other features, such as a televisions tuner, input for external devices such as DVD or enhanced 3D graphics for gaming.
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