We know that the maximum continuous power usage of the 27 inch Imac is 120W more...

Discussion in 'iMac' started by Whackintosh, Dec 16, 2009.

  1. Whackintosh macrumors 6502

    Mar 8, 2009
    ... than the 21.5 machines, but does anyone know how much bigger a power-eater the i5 or i7 machines would be under average load (browsing, emails etc)?

    Maximum continuous power: 241W (21.5-inch models); 365W (27-inch models)
  2. tdar macrumors 6502a

    Jun 23, 2003
    On the Space Coast
    The 365W number is from Apple's Spec sheet for ALL of the 27" models so I would think that the max draw from a 27" would be 365 watts. That is most likely the i7. Others would then be less of course
  3. Whackintosh thread starter macrumors 6502

    Mar 8, 2009
    I assume this too, and that rating is for when the machine is under maximum load. Has anyone measured their machines when idle / under light load to determine how power-hungry they are? The 21.5 units are amazingly energy efficient, and I wonder if the 27 inchers aren't far behind.
  4. Goldie009 macrumors member

    Oct 29, 2009
    I remember reading that there can be an almost 100 watt difference between the screen on full power and screen fully dimmed so a lot of it may be to do with lighting all 27 inches of display at full power....
  5. yourashero macrumors regular

    Oct 28, 2009
    Im running 14 safari windows, using itunes and downloading at 150 kb/s. My external fantom hard drive is also plugged into my ups backup. It shows between 92 and 101 watts. The load goes down to 0 watts when the computer is in sleep mode. That doesn't seem very accurate to me. The APS backup is about a week old. Maybe its faulty?
  6. mapleleafer macrumors regular

    Nov 2, 2009

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