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3. CPU Hacks > 26. As Goes Voltage, So Goes Speed

As Goes Voltage, So Goes Speed

Adjusting the power supply voltage to your CPU can make all the difference between an erratically performing speed-hack and a stable screaming demon.

Overclockers love to tweak every available parameter in attempts to squeeze every bit of performance out of their CPUs and system boards. Cranking up the speed is the most obvious way to get the CPU to run faster, but to get or keep it running at higher speeds you may have to jack up the CPU’s power supply voltage a notch or two.

Today’s CPUs run at extremely low voltages—in the range of 1.3 to 1.9 volts. As the CPU runs faster it gets warmer; as things get warmer their resistance increases, which causes loss of voltage and limits the available current to keep the device powered adequately. At these low voltages, it does not take much resistance to have a significant impact on voltage drop and increased heat generation.


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