Video Cards Components Hardware

Video Cards Components Hardware

Video Cards are devices that display graphics and text on a monitor. They require special software called drivers to communicate with the operating system kernel. Different video cards differ in the amount of colors they can display (color depth), the amount of dots (pixels) per line, and the amount of lines per screen (pixels per line x lines per screen is referred to as resolution). At any given resolution and color depth, there is a speed at which each vertical and horizontal screen can be drawn called refresh rate or frequency (measured in Hertz [Hz]). Along with your video cards limitation to certain resolutions and refresh rates, your monitor must be compatible to display at the same setting. Certain video cards are called accelerators in that their drivers are optimized to take special requests from the operating system and process them in much less time than a normal request would take. Examples are windows accelerators which draw windows components quickly, 3D accelerators which render and display polygons at tremendous speeds.

Top: Computers: Hardware: Components: Video Cards

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