CPU Cache

Lesson in the Computer Science Roadmap · Stage 21: How Computers Work

Last updated 14 September 2026

What is CPU Cache?

A CPU cache is a hardware cache used by the central processing unit of a computer to reduce the average cost to access data from the main memory. A cache is a smaller, faster memory, located closer to a processor core, which stores copies of the data from frequently used main memory locations.

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Free resources to learn CPU Cache

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CPU Cache: common questions

Can I learn CPU Cache in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain CPU Cache in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this CPU Cache tutorial for beginners?

It is lesson 179 of 188 in the free Computer Science roadmap, in stage 21, How Computers Work. If you are new to Computer Science, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.