underclock

underclock

To lower the clock rate of a processor in order to improve battery life. CPUs are designed to run at a certain speed; however, many mobile products have underclocked CPUs to save power. Contrast with overclock.
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Note: The FX-8370 is fast because we couldn't underclock the CPU to 2.
A clock-locked Celeron at 66 MHz forces users to underclock their front side bus to 66 MHz on new motherboards, which are capable of running at 100 or 133 MHz, or risk burning up the Celeron by overclocking it.