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Computations per kWh<br />

Mobility Era Demands Higher Power Efficiency<br />

1.0 E17<br />

1.0 E16<br />

1.0 E15<br />

Smartphones<br />

Laptops (no screen)<br />

Tablets<br />

1.0 E14<br />

Dell Dimension 2400<br />

Gateway P3, 733 MHZ<br />

Dell 730X<br />

1.0 E13<br />

IBM PS/2 E high<br />

efficiency desktop<br />

Dell Optiplex GXI<br />

1.0 E12<br />

1.0 E11<br />

Compaq Deskpro<br />

386/20e<br />

486/25 and 486/33<br />

Desktops<br />

1.0 E10<br />

1.0 E09<br />

Mac 128k<br />

IBM PC<br />

Apple II<br />

C 64<br />

Altair 8800<br />

IBM PC-XT<br />

Apple IIe<br />

IBM PC-AT<br />

Adapted from: Koomey J, Berard S, Sanchez M, Wong H , "Implications Of Historical Trends In The<br />

Electrical Efficiency Of Computing," Annals of the History of Computing, IEEE , Vol.PP, no.99, pp.1, 0<br />

10<br />

1.0 E08<br />

1975 1980 1990 1985 1995 2000 2005 2010<br />

Year<br />

APPLIED MATERIALS- EXTERNAL USE<br />

2015

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