Video cards are becoming one of the most important components of computers. Also they can be one of the most difficult pieces of hardware to understand. It used to be that video cards were just for gamers, however many people today use their computers for movies, video and picture editing etc. that demand a video card. There are two key components of a video card, those are the quality of the video processor and the amount of memory. The video processor is sometimes refered to the GPU or graphics processor unit. The memory is used for 3-D imaging and enhancing the refresh rate to provide a more stable display. Some video cards may have up to 4gb of memory. Another important quality of the video card is the type of memory. Most commonly there is GDDR3 and GDDR5, this is important to know because some cards that have 2gb of memory are slower than a 1gb card because it is GDDR3 vs GDDR5.
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