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September 14, 2020

Processor Cache Memories

Digital memories found in processors, that needs to be very fast.

In order to have an even faster memory, processors implement a part of memory directly onto their chips, called the cache memory. Its hardware implementation and location (closer to logic area of the processor) makes it the fastest storage accessible from the processor. This memory is also a type of random access memory, and shares its drawbacks (loss of data when power turns off).

Before data is loaded into processor registers from the RAM memory, it is actually transferred from RAM to cache memory. Knowing this is important to understand the performance of data structures and of some algorithms.