When considering desktop CPU speed do keep in mind that the processor is one of the most important components of a desktop computer as it basically acts as the brains of the computer. How quickly you can download files, how many programs you can run at one time, and how fast your browser can load images and web pages are all determined in large part by the desktop computer processor speed your system is capable of achieving.
CPU stands for central processing unit and, in general, the higher the desktop CPU speed the better the performance of the computer. There are two desktop computer processor speed values to pay attention to. The first is the speed at which information is processed(clock speed). The second is the speed at which the CPU communicates with system memory and the graphics processor(via Front Side Bus).
A desktop CPU speed explanation is not complete without covering the