Overclocking the computer processor or memory causes it to go faster than its factory rated speed. Processor rated at a frequency of 2.4 GHz can be overclocked to 2.5 GHz or 2.6 GHz, and the memory is rated at 200MHz can reach 220MHz and above. The extra speed results in more work completed by the processor and / or memory in a certain period of time, growing the whole performance of computers of the PC.