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    Undervolting MBA 13 ultimate so worth the money

    Discussion in 'Apple and Mac OS X' started by kettlecorn, Feb 6, 2011.

  1. kettlecorn

    kettlecorn Notebook Consultant

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    I paid $10 for coolbook yesterday and though i dont have any particular heat issues or battery life issues (i get about 4-5 hours with 40% brightness and working hard with multiple programs open or 3 max with high brightness and youtube videos, etc.) I wanted better battery life and figured it wouldn't hurt.


    Installed, registered, and setup today. Setup and running stress tests to make sure the voltages I set it at are stable, took about 2-3 hours. I used CPUtest with settings on "huge", 10 repetition, and 2 instances.


    Right now it seems stable at the settings:
    798mhz - .9250V
    1595mhz - .9250V
    1862mhz - .9250V
    2128mhz - .9375V

    which is wayyy lower than what it was default at over 1.0V. Anyway, there doesn't seem to be any problems yet I am seeing a good increase in my battery life. getting about 7-8 hours at 30-40% brightness. 72% remaining at 40% brightness, typing this mesage with about 6 tabs open and ichat open and it's reading 6 hours. I won't know till it calibrates again but I think it's worth the money.
    A+
     
    kettlecorn, Feb 6, 2011
    #1
  2. ajreynol

    ajreynol Notebook Virtuoso

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    oh sweet! let me see abou...

    "CoolBook does not work with the i5 / i7 MacBook Pro."

    oh.

    *leaves*
     
    ajreynol, Feb 7, 2011
    #2
  3. AppleUsr

    AppleUsr Notebook Deity

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    i also heard that if you have the 1.4 ghz 11 inch macbook air all settings are disabled. this doesnt happen with the 1.6 11 inch but i havent investigated what was going on.
     
    AppleUsr, Feb 7, 2011
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  4. Bog

    Bog Losing it...

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    I've heard that CB delivers good results, but for my MBP 7,1 it successfully UVed and then ramped up the fan RPM to the point where the machine was unusable... so I got rid of it.
     
    Bog, Feb 7, 2011
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  5. kettlecorn

    kettlecorn Notebook Consultant

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    Really, thats weird. I notice my temps are about 10-15 degrees cooler and i never hear the fan ever. Unless i load up starcraft II which i only did for testing purposes. I do notice things a TINY TINY bit less snappier but i cant pinpoint it to the Coolbook or my SSD being 80% full at the moment.
     
    kettlecorn, Feb 7, 2011
    #5
  6. nuno.bett

    nuno.bett Newbie

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    Been using coolbook for my mba 2.13, for the past day, and loving it so far.

    I've set my MBA 2.13 coolbook to run with only one frequency [email protected] and everything is running cooler .

    Been testing since yesterday, have ran several CPU test instances, been running cputest with All Tests, 10 Repetitions and 4 instances for 2h30m already, and working at the same time and it is stable as a rock.

    Just don't know if I should enable other frequencies or not?

    If it runs 700mhz at the same voltage as 2.13ghz, should I enable it or not? Any advantages/disadvantages?
     
    nuno.bett, Feb 15, 2011
    #6