OCR GCSE - CPU Performance

Clock speed is measures in

• bytes
• bits
• time
• hertz

Which of the following best defines clock speed?

• Used to count the number of instructions.
• The number of instructions stored in memory.
• The number of cycles performed in a second.
• Used perform mathematical calculations.

3 GHz means approximately how many instructions per second?

• 0.3 million instructions
• 3 million instructions
• 0.3 billion instructions
• 3 billion instructions

Increasing the clock speed could mean?

• Allows more instructions to run per second.
• You can store more instructions in your computer.
• The cache memory will increase as well.
• More storage in the cache memory.

What are the 3 C's that can improve the performance of a CPU?

• Cache, cores, clock

• Clock, characters, component

• Computer, component, control unit

• Control unit, capture, cache

How can a bigger cache improve CPU performance?

• By being able to carry out more calculations
• By being able to store more recently used instruction inside the CPU for quicker access times
• By being able to 

The faster a clock runs the more power it consumes and the more heat it generates

• True
• False

CPU Cache is located on

• The CPU
• The RAM
• The hard drive
• The motherboard

What is a core?

• The central part of a CPU

• The central part of a Control Unit

• A discrete processing unit within a CPU

• The part of a CPU which does the calculations

A quad core processor has how many cores

• 1
• 2
• 4
• 8