It is the procedure of running a PC component to a high clock rate (more clock cycles per second) than it was designed for, or has been specified by the company, generally practiced by enthusiasts to improve the performance of their computers. A few purchase Low-End components of the PC, which they after that over clock to high speed, over clock, or high-frequency components to get performance levels away from the particular values. Other over clock outdated components to carry on pace with the requirements of the new system, rather than purchase new equipment.

People who over clock their components mostly focus their hard work on processors, graphics cards, chipsets motherboard, and Random Access Memory (RAM). It is the handling of the multiplier and the CPU front side bus of the motherboard (FSB) speed until a maximum steady operating frequency is achieved, even if with the introduction of new chipset X58 and Intel's Core i7 processor, Front Side Bus has been replaced with in the QPI (Quick Path Interconnect)? Often is called Base clock (BCLK). While the idea is simple, the variant of the electrical and physical characteristics of computing systems make difficult the process. CPU multipliers, bus dividers, voltages, thermal loads, cooling methods and some other factors may influence it.