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We’re refreshing the questions on our KS3 and GCSE Computer Science subject knowledge assessment. The current version remains available. Updated questions will be available from 18 May 2026.

GCSE

Lesson 8 Computer specifications

Curriculum > KS4 > Unit > Lesson

This lesson will teach your learners how to evaluate a computer based on its specifications. They will discover the factors that limit a CPU’s performance: clock speed, cache, and the number of cores. Learners will then use a computer component website to build computer systems of their own. This activity is designed to put their understanding of computer systems into a real-world context. Selecting components to a budget will force learners to make compromises and to examine the importance of the components.

Learning objectives

  • Explore the factors that impact a CPU’s performance
  • Select components to create a computer system
  • Evaluate a computer’s suitability for a given task

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