Processor:

This is also called the Central Processing Unit (CPU).  The CPU is the brain of the computer.  It executes instructions and communicates with devices via the data bus which a system of pathways used for communicating. The two most common manufacturers of processors are Intel and AMD.  Processors that are good for basic home users are Celeron D by Intel and AMD Sempron.  For more graphic intense jobs, Core 2 Quad, Core 2 Duo and Core 2 Extreme processors are good.   In a business where there are servers, Intel Xeon and Itanium 2 and AMD Opteron are good.  Processors help produce better speeds for handling jobs that are carried out by your computer.