What basic factors affect the overall speed of my computer?

What basic factors affect the overall speed of my computer?

Ali Nasri (Computer Specialist, Mac 911 Inc.) gives expert video advice on: How important is brand name when it comes to buying computer hardware?; Do computers come with monitors?; What factors do I need to consider when buying a notebook computer? and more...

The speed of your computer is primarily determined by the speed of your CPU, which is the central processing unit. It's the brain of the computer. The speed of the computer is measured in gigahertz. Gigahertz means billions of cycles per second. The faster the gigahertz, the faster the computer is able to make calculations per second.