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Cache RAM |
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A small collection of very high speed RAM. In general, modern microprocessors can process information much faster than standard dynamic RAM can even supply the information. Nevertheless, fast dynamic RAM is very expensive. Instead, a very small amount (typically 256K or 512K) of very fast "cache RAM" acts as a buffer between the CPU and the dynamic RAM. If the information needed by the CPU is in the cache, it can be processed without waiting to retrieve it from the dynamic RAM. |
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