High Quality Content by WIKIPEDIA articles! The CPU core voltage is the power supply voltage supplied to the CPU, GPU, or other device containing a processing core. The amount of power a CPU uses, and thus the amount of heat it dissipates, is the product of this voltage and the current it draws. In modern CPUs, which are made using CMOS, the current is almost proportional to the clock speed, the CPU drawing almost no current between clock ticks. In order to help conserve power and manage heat, many laptop and desktop processors have a power management feature that allows software to adjust the clock speed and core voltage dynamically.

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