Do i7's use more power / create more heat than i5's when idle?

Discussion in 'iMac' started by Whackintosh, Feb 25, 2013.

  1. Whackintosh macrumors 6502

    Whackintosh

    Joined:
    Mar 8, 2009
    Location:
    Montreal, Quebec
    #1
    I'll rarely need the extra horsepower of an i7, but I just might go for it. I know they run slightly hotter and use more power than i5 processors do when pushed to their limits, but do they consume more energy when idle (or not pushed to their fullest)?
     
  2. WilliamG macrumors 604

    Joined:
    Mar 29, 2008
    Location:
    Seattle
    #2
    Probably negligibly.
     
  3. Hexley macrumors 6502a

    Joined:
    Jun 10, 2009
    #3
    If you can afford an Core i7 then the power cost to you is negligible.

    My Core i7 is not running at 48C while playing a flash video.
     
  4. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #4
    Without load 1-3 watts

    With load 20 depending on the task.
     
  5. Mac32 macrumors 6502a

    Joined:
    Nov 20, 2010
    #5
    They will not use more power when idle, but they'll run hotter/use more power when running intensive tasks. The i7 CPU has a higher boost frequency, and the additional HT threads also creates more heat. How much is very hard to say, a few celsius for certain. You could check with some overclocking forums. Overclockers tend to disable HT for higher overclocks.
     

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