Look up: overclocking

1. overclocking
   (hardware) Any adjustments made to computer hardware (or software) to make its CPU run at a higher clock rate than intended by the original manufacturers. Typically this involves replacing the crystal in the clock generation circuitry with a higher frequency one or changing jumper settings or softw...
   Found on http://foldoc.org/overclocking
   
   
2. Overclocking
   `Overclocking` is the process of running a computer component at a higher clock rate (more clock cycles per second) than it was designed for or was specified by the manufacturer, usually practiced by enthusiasts seeking an increase in the performance of their computers. Some purchase low-end compute...
   Found on http://en.wikipedia.org/wiki/Overclockin