What is Cache Memory?
Cache, pronounced "cash", is a high-speed memory designed to supply the processor with the most frequently requested data and instructions. The information located in the cache memory can be accessed many times faster than information in the system's main memory. The more information your system can retrieve from the cache memory, the more efficient the system will run.
Level 1 (L1) cache, also referred to as Primary Cache, is normally located inside the CPU chip. Level 2 (L2) cache, also referred to as Secondary Cache, was normally located on the system board near the CPU in the past. In today's systems, both are physically located within the CPU and as a result are not upgradable.
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