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Clock speeds have changed considerably with time. This has made sophisticated programs possible because the wait time for execution has been reduced. Programs like database system, web applications, office suite products, would not be popular or widely used without a fast response.
Clock Speed Contributors

Guide to Clock Speed

The Intel 8088, one of the first processors, and common in computers around the year 1980, ran at 4.77 MHz. In the year 2000, clock speeds reached the 1 GHz mark. Clock speeds determine the "power" of the computer. Higher and faster clock speeds make computer programs run faster, are easier to manage, and allow more sophisticated programs to be developed.

The Brighthub guide to clock speeds helps users identify the different forms that clock speeds take. CPU is one, but what devices affect clock speed, like memory, bus, and external cards - audio, video, and network are also discussed.

ClockSpeed

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