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OCR GCSE Computer Science Exam Questions
1.1 Systems Architecture
1.1 question 48
Explain why a dual-core processor does not always run programs twice as fast as a single-core processor.
2
MARKS
Mark scheme
Some programs are not designed to make use of multiple cores, or tasks may need to run in sequence, meaning the extra core may not improve speed.
Exam guidance
1 mark for lack of software optimisation, 1 mark for sequential task limitation.
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