When buying a computer it helps to know some basic information about components and processes. Hopefully these explanations will give you a better understanding of how a computer functions, and enable you to ask the salesman some productive questions about CPU ,Hard DRIVE, Mother Board etc.

The single most important factor in the cost and performance of your computer is the processor. Choose a brand you are comfortable with, then consider the speed you will need. Processor speeds are measured in gigahertz (GHz), and the higher the number, the faster the processor. If you only want to check email, manage your finances and perform other everyday functions, you can save money by going with a slower processor. If you plan to have multiple applications open at once, look for a faster processor. For gaming or multimedia applications like photo/video editing, you will want the fastest processor that fits your budget.