Random Access Memory cache.Extremely fast memory chip that help the computer to operate faster by temporarily storing frequently-accessed or recently-accessed data.Internal cache (L1) is built into the CPU; external cache (L2) is on the motherboard.When the CPU needs data, it first checks the internal cache, which is the fastest source.If the data is not there, it checks the external cache.If the data still is not found, a search of the slower RAM must be made.
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