Computer Video Card
The computer video card is a very important component in a computer. Without it you would not be able to send any information to the monitor. Your computer can be running fine but if you can't see anything on the monitor then it is basically worthless. So can you see the importance of the video card and choosing one that suits your needs?
A computer video card is placed in the motherboard, where it transfers video signals through a cable to your monitor. The video card can either be built into the motherboard or be a separate card that is placed in either the AGP or PCI-Express Slots.
The computer graphics cards major job in a computer is to convert graphic patterns into signals for the monitor's screen. However in recent times as the graphics card has become more advanced it has taken some of the jobs previously assigned with the CPU and through a graphics pipeline adds 2D and 3D effects and it also adds textures.
Video Card Ports
There are several ways the computer graphics card transfers the signal to the monitor. The older and most common way is through the VGA (Video Graphics Array) port. More recently the DVI (Digital Video Interactive) port has been used.
Some computer graphics cards have both of these ports on the one card allowing two monitors to be connected at the same time. S-Video (TV Out) ports have also become more common on computer video cards. These can be connected to through the S-Video In port of a TV thus turning a TV into a computer monitor.
Measuring the Video Card
There are a few ways of measuring computer graphics cards. MB (Megabyte) is the most common way of telling how good a computer graphics card is. Typical graphics card memory sizes are similar to RAM but smaller, 16MB, 32MB, 64MB, 128MB, 256MB, 320MB, 512MB, 640MB, 768MB and maybe even 1GB.
Computer graphics cards have been improving incredibly fast in recent years and has now become one of the most important features of a computer. The graphics card is also measured by what type of memory it has (DDR, DDR2, DDR3 or DDR4) and by its chipset. See this page on how to choose a Video Card for information on how to identify your needs and act accordingly.
Buying a Video Card
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