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Cores - GCSE Computer Science Definition

Reviewed by: James Woodhouse

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What are CPU cores?

In GCSE Computer Science, a CPU core is an independent processing unit capable of executing instructions. Modern CPUs have multiple cores, allowing them to process multiple tasks simultaneously.

How do cores impact performance?

A multi-core processor can handle multiple processes at once, making computers more efficient. For example, a quad-core (4-core) CPU running at 3 GHz can theoretically process up to 12 billion instructions per second.

Revision resources to ace your exams

Explore cores in more detail and master other key related terms such as the fetch-decode-execute cycle in our revision note pages here:

Characteristics of the CPU (OCR GCSE Computer Science)
Characteristics of the CPU (AQA GCSE Computer Science)
CPU components & their function (Edexcel GCSE Computer Science)

Challenge yourself with our expertly created topic questions and reinforce your learning with our interactive flashcards. 

GCSE Computer Science Revision Resources

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James Woodhouse

Reviewer: James Woodhouse

Expertise: Computer Science

James graduated from the University of Sunderland with a degree in ICT and Computing education. He has over 14 years of experience both teaching and leading in Computer Science, specialising in teaching GCSE and A-level. James has held various leadership roles, including Head of Computer Science and coordinator positions for Key Stage 3 and Key Stage 4. James has a keen interest in networking security and technologies aimed at preventing security breaches.

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