What Does CPU Cache Do?

How does CPU cache effect processor performance? Is there much of a difference between a 6MB and 8MB cache?
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    How effective cache is depends on how the cache is organized, how the CPU manages it and how well the code and data are structured to make the best use of them.

    For some workloads where the CPU streams data from RAM to GPU with some on-the-fly processing as is often the case in games, cache has little influence.
  2. Best answer selected by rjackowens.
  3. Thanks!
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