The processor is a computer's brain, and it affects how much work you can do with a system and how fast. As with other desktop PC components, faster processors are more expensive, but even today's mid-range processors will support common business applications well. Processor speed is measured in Gigahertz (GHz).
If you plan to keep your system for more than a year or two, consider investing in a faster processor that runs at about 3.4 GHz. This processor will support future applications that will require faster processes for longer. For systems that you plan to replace in a year to 18 months, you can safely choose a slower processor in the 2 GHz range because it will give you the power you need today and you'll replace it long before it stops supporting new applications.
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