Cache memory is a small and fast type of memory that is built into a computer's processor chip or placed on a separate chip that is arranged to store frequently accessed data and instructions. The cache memory acts as a buffer between the processor and the system memory (RAM), improving the overall performance of the computer. When the CPU requests data or instructions, it first checks the cache memory to see if the requested information is already stored in there. If the information is found in the cache, the CPU can retrieve it quickly. If the information isn't stored in the cache memory, then it is retrieved from the slower system memory.
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