Active Guardband Management in Power7+ To Save Energy and Maintain Reliability
DEC 02, 2013 10:07 AM
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abstract

Active Guardband Management in Power7+ To Save Energy and Maintain Reliability

Charles R. Lefurgy
Alan J. Drake
Michael S. Floyd
Malcolm S. Allen-Ware
Bishop Brock
Jose A. Tierno
John B. Carter
Robert W. Berry Jr.

Microprocessor voltage levels traditionally include substantial margin to ensure reliable operation during worst-case conditions, but during typical operation it is larger than necessary and wastes energy. Real-time measuring of available timing margins could help reduce power consumption and increase performance.

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