cache Pronounce it

A fast type of memory used to speed up the memory system. Cache memory uses an active storage circuit so that it can respond faster to requests from the CPU. Sometimes more than one level of cache is used in a computer, e.g., level 1 inside the same package as the CPU and level 2 in a separate chip near the microprocessor. CPU registers are faster than cache memory, but the main memory (sometimes referred to as the "RAM" of the system) is slower.
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