Components of a computer

How does the computer work?

Processor speeds

The CPU has a speed which it can process an amount of data. For example, 3.2 GigaHertz can process 3,200,000,000 pieces of instructions in a second. You can overclock the CPU to go over its peak performance - this will increase the amount of heat created.

Networking interfaces

A network interface is the point of interconnection between a computer and a private or public network. A network interface is generally a network interface card implanted into the PC.


In every CPU, there are caches, which holds the information before it is processed by the processor itself. There are three levels of cache. Starting from 1 and finishing at 3 before it is processed.


Cores are key in a central processing unit. They fetch, execute, decode and process the data that has been given by the cache. A CPU core allows you to modify the computing power. You can use this to speed up the computing of the tasks on your PC. The more cores you have, the faster the data can be executed.


Memory size

Memory, or RAM, is volatile. Therefore, it loses data when the power is lost. It holds data temporarily for the CPU. The more RAM you have, the more data can be processed simultaneously.

Graphics cards

A graphics card is a device installed in a computer that consists of a graphics processing unit designed to help process and display images, especially 3D graphics. Graphics cards help take the processing strain off the main processor, and can contain their own memory to take the strain off the system RAM.

Memory speeds

The higher the RAM's memory speed, the faster it can send data to the CPU; faster memory speed can result in better computer performance. DDR (double data rate) RAM uses technology that allows the RAM to transmit data twice as fast as normal RAM.

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