Performance Of The CPU

Question 1

What factors affect the performance of the cpu?

Answer 1

Clock speed,
Cache size,
Number of cores

Question 2

How does clock speed affect cpu?

Answer 2

Measured in hertz
Measured the number of fde cycles per second
E.g. 3.2 GHz =3.2 billion instructions can be fetched per second

Question 3

What is cache

Answer 3

Temporary storage of recently used data and instructions being read to and written from. Located on or near the CPU.

Question 4

How does cache size affect CPU?

Answer 4

Stores copies of recent data and instructions. Much quicker to access than RAM. Faster because we want to avoid getting instructions and data from memory because it’s slow

Question 5

What is a core

Answer 5

A core is a complete copy of a CPU
A quad core processor would have four processing units:
- registers
- ALU
- accumulator
- control unit

Question 6

How does number of cores affect CPU?

Answer 6

CPUs with multiple cores have more power to run multiple programs at the same time