Factors affecting CPU performance

What is clock speed measured in?

• Mph

• Kmph

• Hz

• Kbps

A GHz is how many instructions per second?

• 100

• 100 000

• 1 000 000

• 1 000 000 000

Where is the cache located?

• Inside the CPU

• Inside the ROM

• On the motherboard

• Inside main memory

Why does more cache improve CPU performance?

• It has a larger capacity than the RAM

• It can decode instructions quicker

• It is more portable than the RAM

• It's in the CPU so doesn't need to fetch instructions from main memory (slow)

If I have a quad core processor with a clock speed of 4GHz how many billion instructions can it process in one second?

• 4

• 8

• 12

• 16

Is a computer with 4 cores always guaranteed to be quicker than a 2 core computer?

• No, it depends on other factors like whether the job can be split up

• No, it depends on the size of the RAM

• Yes, more cores means it will be quicker no matter what

• No, it depends on how much cache there is

What does NOT feature in the FDE cycle?

• CPU

• Memory

• Storage

• Buses

How many cores in a quad-core CPU?

• 1

• 2

• 4

• 8

What is cache a form of?

• Money

• Memory

• Storage

• Hardware

The rate of the fetch-execute cycle depends on the clock speed.

• TRUE

• FALSE