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Nonideal battery and main memory effects on CPU speed-setting for low power

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2 Author(s)
Martin, T.L. ; Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA ; Siewiorek, D.P.

This paper explores the system-level power-performance tradeoffs of dynamically varying CPU speed. Previous work in CPU speed-setting considered only the power of the CPU and only CPUs that vary supply voltage with frequency. This work takes a broader approach, considering total system power, battery capacity, and main memory bandwidth. The results, which are up to a factor of four less than ideal, show that all three must be considered when setting the CPU speed.

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Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:9 ,  Issue: 1 )