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    would a laptop with i5 and HD 4000 graphics use less battery than i3 with hd 3000?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by mac336, Sep 25, 2012.

  1. mac336

    mac336 Newbie

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    I had been told that i5 processor is more energy efficient and uses less battery and that intel HD 4000 graphics also uses less energy. is this true?
     
    mac336, Sep 25, 2012
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  2. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    Yes, it is (if we keep the workload low and equal between the two platforms - IB and SNB).

    See:
    ARK | Compare Intel® Products


    Of course, the IB i5 can turbo up to 3.1GHz and will chew up your battery faster if your workload demands it (think extended RAW video editing sessions...)...

    But as long as your workload allows the cpu to drop back to idle (instead of being pegged at 100% load) then the IB will give you more performance/responsiveness while also giving you greater battery life at the same time.
     
    tilleroftheearth, Sep 25, 2012
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  3. namaiki

    namaiki "basically rocks" Super Moderator

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    Make sure to research the specific laptop models as well. notebookcheck.net's "Surfing with WLAN" result is the one that I would generally assume is reasonable to achieve when using a certain laptop on battery.
     
    namaiki, Sep 25, 2012
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  4. nipsen

    nipsen Notebook Ditty

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    With light loads.. like, compiz fusion for the desktop, some video playback, flash, normal surfing, and so on -- I saw one example where the sandy bridge setup lasted longer.. Not entirely sure why. Maybe it has something to do with the graphics module running at a frequency dependent on the bus-speed, or something like that.. So if the i3 system has a lower default bus-speed, lower clocked ram, etc., it could end up having a lower idle effect draw because of that.

    ..because it, well, it seems (very scientific, I know) to me that there's practically no difference whatsoever between the different 32nm and 22nm processors on similar clocks and "typical desktop/office" loads.
     
    nipsen, Sep 25, 2012
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