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Meaning of PRIMARY CACHE

 
Computing Dictionary
 
 Definition: 

(L1 cache, level one cache) A small, fast cache memory inside or close to the cpu chip.

For example, an intel 80486 has an eight-kilobyte on-chip cache, and most pentiums have a 16-KB on-chip level one cache that consists of an 8-KB instruction cache and an 8-KB data cache.

The larger, slower secondary cache is normally connected to the CPU via its external bus.

 

 

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