Video Memory
Just as the CPU uses memory on the motherboard as a workspace to create information, the video card uses its own video memory (or main memory borrowed by systems with integrated graphics) as a place to create visual information that is displayed by the monitor. Just as different types of RAM affect the speed of the computer, different types of video RAM affect the speed of the video card.
Video memory comes in almost as many different types as motherboard memory. The following types of memory were reviewed in Chapter 7, “RAM,” and their performance on video cards is comparable to their performance on the motherboard:
DRAM— Dynamic RAM
EDO RAM— Extended Data Out RAM
SDRAM— Synchronous DRAM
DDR SDRAM— Double Data Rate SDRAM
At one ... |
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