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A processor consumes far less energy running tasks requiring a low supply voltage than it does executing high-performance tasks. Effective voltage-scheduling techniques take advantage of this situation by using software to dynamically vary supply voltages, thereby minimizing energy consumption and accommodating timing constraints.
Hiroto Yasuura, Tohru Ishihara, Takanori Okuma, "Software Energy Reduction Techniques for Variable-Voltage Processors", IEEE Design & Test of Computers, vol. 18, no. , pp. 31-41, March/April 2001, doi:10.1109/54.914613
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