Clock Speed: Difference between revisions

Clock speed is the most prominent specification given for CPUs, measured in cycles per second (hertz). Early CPUs had clock speeds in the thousands of hertz (kilohertz, or KHz) range, then they moved into the millions of hertz (megahertz, or MHz), and now they are in the billions of hertz (gigahertz, or GHz). This is used mostly for marketing purposes, as it's a simple figure to comprehend and correlates well with performance.