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Low Power Caches

Discussion in 'Electronic Design' started by Patrick, Apr 23, 2007.

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  1. Patrick

    Patrick Guest

    Hi all

    I am just doing some experiments with low power caches, called drowsy
    caches. I am using
    Hotleakage to simulate the behaviour of the cache. I am simulating a
    datacache with 1024 lines each holding
    64 bytes. The data array of the cache has a power consumption of 0.025
    W if all lines are active. If some lines are in
    drowsy mode the power consumption is less, each line in drowsy mode
    saving around 10e-08 W. Obviously I can detect this difference in my
    simulation but I wonder if I could also detect such a change in
    practice with real measurement devices? Are there devices that can
    detect a difference of lets say 10 lines are in drowsy mode to all
    lines are active or will there be too much noise?

    Many thanks for usefull comments,
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