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Overclocking

Overclocking is a technique used to increase computer performance by running hardware outside its rated specifications. Although many factors determine a CPU's speed, the most obvious and easiest to modify is its clock rate - a series of pulses that tell it when to perform the next step in each calculation. The faster the pulses, the more the chip gets done in a given time period. When testing CPUs, manufacturers will rate them for reliable performance at a given clock speed. Though they may be capable of running on a faster clock, the farther a chip is pushed past its rated speed, usually the more likely it is to experience random errors and unreliable behavior. Some manufacturers rate their chips close to these limits, giving little room to safely overclock, while others are more conservative in initial ratings, allowing overclockers to raise their chip speeds by 25% or more. Consequences of overclocking are often increased voltage requirements and a hotter-running CPU, requiring more elaborate cooling setups.

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