What is Overclocking of CPU? | Overclocking Basics

 
Overclocking** is the process of making a computer or component operate faster than the clock frequency specified by the manufacturer by modifying system parameters.

In Simple words....Overclocking is the process of Boosting amount of GHz (Speed) of the Processor manually by changing the default configuration of clock rate in BIOS.

For example, say you have a "2 GHz" processor, overclocking this processor is increasing this speed to make it faster. If you did a "300 MHz" overclock on this, your processor will have a need speed of "2.3 GHz".

Many motherboards are sold, and advertised, with extensive facilities for overclocking implemented in hardware and controlled by BIOS settings.

Advantages :~

• U can, in many cases, purchase a lower performance, cheaper component (i.e. CPU or GPU) and overclock it to the clock rate of a more expensive component.
• Higher performance in Games, Encoding, Video editing applications etc.
• In some systems, small overclocking of a component can increase full performance of another components to a greater percentage than the limiting hardware is overclocked.
  For Ex. Many motherboards with "AMD Athlon 64" processors limit the clock rate of four units of RAM to 333 MHz. However, the memory performance is computed by dividing the processor clock rate (which is a base number times a CPU multiplier, for instance 1.8 GHz is most likely 9×200 MHz) by a fixed integer such that, at a stock clock rate, the RAM would run at a clock rate near 333 MHz. Manipulating elements of how the processor clock rate is set (usually lowering the multiplier), it is often possible to overclock the processor a small amount, around 100–200 MHz (less than 10%), and gain a RAM clock rate of 400 MHz (20% increase in RAM speed, though in only Memory performance).

Disadvantages:~

•  Lifespan of Processor components can be reduced by increased Voltages and Heat.

• Warranties may be voided by overclocking.

• Because of more power consumption, heat increases the internal air temperature within the system case, which may affect other components.

• Hardware Failure rate is increased due to changes in the System default Configurations

• Eg. File Copy Errors or BSOD (Blue Screen of Death) Errors.

• Requires a Heavy Duty Cooling Systems. Eg. Liquid Coolers or In some cases of Extreme Overclocking "Liquid Nitrogen" or "Helium" is used.

Some Important Notes :~

** Overclocking decreases the life expectancy of any component; however, hardware generally lasts a long time. Your overclocked components would be obsolete by the time they burned out,and most of you would've replaced it before that time comes.

** Only some of the Processor Families Supports Overclocking feature.

** Some latest Processor families have Automatic Overclocking feature Eg. TurboBoost Technology Inspired by Intel.

** We doesn't recommend to do Overclocking, it can damage ur hardware component or can makes it Permanently disabled.

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