Wire resistance also increases slightly at higher temperatures, contributing to decreased circuit performance.īecause most stock cooling systems are designed for the amount of power produced during non-overclocked use, overclockers typically turn to more effective cooling solutions, such as powerful fans, larger heatsinks, heat pipe and water cooling. In addition, some digital circuits slow down at high temperatures due to changes in metal–oxide–semiconductor field-effect transistor (MOSFET) device characteristics. Because of increased heat produced by overclocked components, effective cooling is necessary to avoid damaging the hardware. As clock frequencies in digital circuits and voltage applied increase, the heat generated by components running at the clock speed also increases. Motherboards with fewer settings, such as those found in Original Equipment Manufacturer (OEM) systems, do not support overclocking.Īll electronic circuits produce heat generated by the movement of electrons. Since tight tolerances are required for overclocking, only more expensive motherboards-with advanced settings that computer enthusiasts are likely to use-have built-in overclocking capabilities. However, supplying the power with improper settings or applying excessive voltage can permanently damage a component. First is to ensure that the component is supplied with adequate power to operate at the new speed. There are several considerations when overclocking. CPU multipliers, bus dividers, voltages, thermal loads, cooling techniques and several other factors can affect it. While the idea is simple, variation in the electrical and physical characteristics of computing systems complicates the process. It is done through manipulating the CPU multiplier and the motherboard's front side bus (FSB) speed until a maximum stable operating frequency is reached, although with the introduction of Intel's new X58 chipset and the Core i7 Processor, the Front Side Bus has been replaced with the QPI (Quick Path Interconnect) often this is called the Baseclock (BCLK). Users who overclock their components mainly focus their efforts on central processing unit, video cards, motherboard chipsets, and random access memory (RAM). Others overclock outdated components to keep pace with new system requirements, rather than purchasing new hardware. Some of them purchase low-end computer components which they then overclock to higher speeds, or overclock high-end components to attain levels of performance beyond the specified values. Overclocking is the process of running a computer hardware 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. 2.2 Stability and functional correctness.
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