Energijska učinkovitost računalnikov

V IEEE Annals of the History of Computing je Jonathan Koomey, profesor na Stanfordu, objavil naslednji zaključek: da se energijska učinkovitost izračunavanja podvoji približno vsako leto in pol. Ta trend velja kar za zadnjih 60 let. Kaj to pomeni na praktičnem primeru?

Imagine you've got a shiny computer that is identical to a Macbook Air, except that it has the energy efficiency of a machine from 20 years ago. That computer would use so much power that you'd get a mere 2.5 seconds of battery life out of the Air's 50 watt-hour battery instead of the seven hours that the Air actually gets. That is to say, you'd need 10,000 Air batteries to run our hypothetical machine for seven hours. There's no way you'd fit a beast like that into a slim mailing envelope.

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