CPU and System Performance

Describe what is meant by 3MHz CPU.

• Mhz means megahertz and GHz means gigahertz.
• A CPU that can carry out approximately 3 million instructions per second.
• The law that states that the clock speed of CPUs manufactured will double every two years.
• Increase number of cores – so that it can carry out more instructions at once

Describe what is meant by 3MHz CPU.

• Mhz means megahertz and GHz means gigahertz.
• A CPU that can carry out approximately 3 million instructions per second.
• The law that states that the clock speed of CPUs manufactured will double every two years.
• Increase number of cores – so that it can carry out more instructions at once

Explain how clock speed affects the performance of a CPU.

• The law that states that the clock speed of CPUs manufactured will double every two years.
• Both these things allow the CPU to process jobs faster and improve the performance of a CPU.
•  A CPU with a higher clock speed can carry out more instructions per second and get processing jobs done faster.
• Mhz means megahertz and GHz means gigahertz.

Describe what is meant by a quad-core processor.

• Both these things allow the CPU to process jobs faster and improve the performance of a CPU.
• Increase size of cache so that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower
• Increase size of cache so that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower
• A CPU with four cores. A core is one unit that can run one program at a time.

Describe what is meant by MHz  for processor speed.

• Mhz means megahertz. A 1 megahertz CPU can follow approximately 1 million instructions per second.
• Both these things allow the CPU to process jobs faster and improve the performance of a CPU.
• The law that states that the clock speed of CPUs manufactured will double every two years.
• Increase number of cores – so that it can carry out more instructions at once

Describe what is meant by clock speed.

• Increase size of cache so that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower
• The law that states that the clock speed of CPUs manufactured will double every two years.
• Mhz means megahertz and GHz means gigahertz.
• The number of instructions that can be carried out per second.

Describe the purpose of cache memory.

• Clock speed is a measure of how many instructions a CPU can carry out per second.
• A duel core processor can carry out approximately twice the number of instructions per second than a single core processor.
• Data can be accessed much faster because it does not need to be fetched from RAM.
• A duel core processor can carry out approximately twice the number of instructions per second than a single core processor.

Explain the concept of Moore’s Law

• Increase size of cache so that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower
• Clock speed is a measure of how many instructions a CPU can carry out per second.
• Increase number of cores – so that it can carry out more instructions at once
• The law that states that the clock speed of CPUs manufactured will double every two years.

Mary’s computer has an 800MHz CPU and 1GB of RAM. Explain three ways that Mary’s computer can be upgraded to improve its performance.

• Both these things allow the CPU to process jobs faster and improve the performance of a CPU.
• Increase size of cache, increase number of cores, and increase clock speed.
• Increase size of cache so that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower
• Mhz means megahertz and GHz means gigahertz.

Explain how cache size of a CPU affect its performance.

• Increasing the size of cache means that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower.
• Increase size of cache so that more regularly used data can be fetched quickly from cache rather than having to fetch it from RAM which is slower
• The law that states that the clock speed of CPUs manufactured will double every two years.
• Clock speed is a measure of how many instructions a CPU can carry out per second.