CPU Performance (OCR A-Level Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What unit is used to measure clock speed in modern CPUs?
What unit is used to measure clock speed in modern CPUs?
Gigahertz (GHz)
How many cycles per second can a 3.5 GHz CPU complete?
How many cycles per second can a 3.5 GHz CPU complete?
3.5 billion
Which type of task benefits most from higher clock speeds?
Which type of task benefits most from higher clock speeds?
Single-thread processing
What are the two main drawbacks of higher clock speeds?
What are the two main drawbacks of higher clock speeds?
Heat generation and power use
What does each core in a CPU function as?
What does each core in a CPU function as?
An independent processing unit
Which applications benefit most from multiple cores?
Which applications benefit most from multiple cores?
Video editing and gaming
Why might single-threaded apps not benefit from additional cores?
Why might single-threaded apps not benefit from additional cores?
They can't divide tasks across cores
Why doesn't doubling cores always double performance?
Why doesn't doubling cores always double performance?
Software may not support multicores
What type of data does cache memory store?
What type of data does cache memory store?
Frequently accessed data
How do L1 and L3 cache levels compare?
How do L1 and L3 cache levels compare?
L1 smallest and fastest
Why is there a limit to beneficial cache size increases?
Why is there a limit to beneficial cache size increases?
Cache is expensive and space-limited
What common mistake involves clock speed assumptions?
What common mistake involves clock speed assumptions?
Thinking high speed alone ensures fast performance