Voltage and frequency scaling

Voltage and frequency scaling may refer to:

• Dynamic voltage scaling, a power management technique in computer architecture, where the voltage used in a component is increased or decreased, depending upon circumstances
• Dynamic frequency scaling, a technique in computer architecture whereby the frequency of a microprocessor can be automatically adjusted "on the fly," either to conserve power or to reduce the amount of heat generated by the chip

Voltage and frequency scaling are often used together to save power in mobile devices including cell phones. When used in this way it is commonly known as DVFS, or Dynamic Voltage and Frequency Scaling.