Because both cache memory and RAM are transistor-based, why do we need cache memory if we already have RAM (Random Access Memory) as a volatile memory? Is it feasible to use a single kind of memory for all functions in a computer?

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter11: Operating Systems
Section: Chapter Questions
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Because both cache memory and RAM are transistor-based, why do we need cache memory if we already have RAM (Random Access Memory) as a volatile memory? Is it feasible to use a single kind of memory for all functions in a computer?

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