External Cache

Reviewed by: Tara Struyk
Last Updated: May 30, 2020

Definition - What does External Cache mean?

An external cache is any cache memory that is not built into a CPU chip. External cache is designed to provide high speed data storage and processing services to the computer processor, its primary/native cache and the main memory.

External cache is also known as secondary cache.

Techopedia explains External Cache

The development of caches is a key event in the history of computing. The system is designed to ensure that the next bit of data a CPU will need is ready in the cache when it is needed.

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