Clock speed (CPU preformance)
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What are the main factors affecting CPU performance?
Clock speed Cache size Number of cores
What is clock speed?
The speed at which the processor operates
What unit is clock speed measured in?
Hertz
What is hertz the name for?
It is the name for for the number of cycles per second or the rate at the electrical current changes in the actual circuits.
Everything the processor does occurs on what?
Tick of the “clock”
What does a faster clock mean?
The faster the clock the more instructions and data that can be fetched decode and executed in a second
What is one cycle per second equal to?
1 hertz
What is clock speed measured in?
Gigahertz
How many cycles per second is a gigahertz?
1 billion cycles
What is the typical speed for a PC?
Between 2GHz and 4GHz
Why doesn’t a 4GHz computer not always work twice as fast as a 2GHz computer?
Because there are many other components affecting the speed of the computer