Alu macbook runs warmer than whitebook [test]

Discussion in 'MacBook' started by maximus06, Jan 4, 2009.

  1. maximus06 macrumors regular

    Joined:
    Nov 5, 2007
    #1
    This isn't a complaint, merely an observation. I own two macbooks at the moment, a 2007 white macbook (2 ghz, rev 3.1) and a new aluminum macbook (2.4ghz, rev 5.1).

    Anyways, I put them side by side and ran some "tests", I compared the screens, the speaker quality and the temperatures using iStat Pro.

    CPU:
    The result was a bit surprising to me: the white (older) macbook ran at an average CPU temperature of ~86 degrees while the new alu one ran at ~96 degrees fahrenheit.

    Fans:
    Old macbook avg RPM: ~1800
    New macbook avg RPM: ~2000

    So in conclusion, the new macbooks ARE hotter even though their fans run at higher speeds. Can anyone explain this? Wouldn't this impact battery life?

    I might mention that all this was basically while browsing the web, playing music in iTunes or idling.
     
  2. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #2
    Aluminium is a greater conductor of heat then plastic? :rolleyes:
     
  3. maximus06 thread starter macrumors regular

    Joined:
    Nov 5, 2007
    #3
    That would explain why the "enclosure parts" are ~5 degrees hotter than on the white macbook, but not the CPU temperatures/fans.
     
  4. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #4
    On more thing. I've done my own tests and Apple has tweaked the SMC on the new aluminium laptops not to throttle up the fans until they reach much higher temperatures.
     
  5. Tinknock71 macrumors 6502

    Tinknock71

    Joined:
    Jan 18, 2008
    Location:
    Westland Michigan
    #5
    Maybe the Porn sites are making the computer a little hotter!:D anyways you would think the alum. one would be running cooler with the latest and greatest technology in it.
     
  6. erstwhilepo macrumors member

    Joined:
    Jan 4, 2009
    Location:
    Midwest
    #6
    The new MacBook has more graphics horsepower.
     

Share This Page