How much power can be saved by disabling cores

Discussion in 'Windows XP General Discussion' started by eatup, Apr 1, 2017.

  1. eatup

    eatup

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    Recently got my hands on a Watt meter, so thought I'd do a little experiment. How much power can be saved by disabling a core in this laptop:

    CPU: Core2Duo at 2.0Ghz down clocked to 1.0 GHz
    Cores: 2
    CPU load: 100% (playing a movie and doing other tasks to ensure load remains constant at/near 100%)
    Battery: Removed
    Wi-Fi: Downloading large file at near max speeds

    Results before: 38.5W max
    After 1 core disabled: 33.5 max

    And because I down clocked my laptop to half speed, the difference would have been 10W!

    (BTW, this is only useful if having longer uptime is more important than performance)
     
    eatup, Apr 1, 2017
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