What are your fan control settings?

Discussion in 'MacBook Pro' started by z400central, May 14, 2007.

  1. z400central macrumors regular

    Nov 8, 2006
    What do you have the following set at:

    - Base Speed
    - Lower threshold
    - Upper threshold

    And what temps do you operate at? Interesting to see what other people run.

  2. ironring2006 macrumors member

    Oct 31, 2006
    Ontario, Canada
    I've played around a bit using the smcFanControl which really just allows you to increase the minimum default. It allows you to have 3 different settings based on using it on battery, AC (not charging), and AC charging.

    I currently have it set to:

    battery: 1800 rpm
    AC (not charging): 3100 rpm
    AC (charging): 4600 rpm

    These settings keep it at about 45 C for light IM/e-mail/iTunes/web activity level, except on battery it runs about 50 C.

    My reasons for these settings are when on battery, a slower fan decreases power usage. 3100 rpm on AC not charging is just low enough that I can't really hear the fans, but keeps the cpu the coolest. Increasing it for when the battery is charging allows the battery to stay cooler since charging will heat it up more.
  3. alljunks macrumors regular

    Apr 8, 2007
    Will it shorten the life on the fan with such high RPM??

  4. winchest macrumors regular

    Aug 5, 2006
    Do you see a recognizable difference in battery power with those settings?
  5. ironring2006 macrumors member

    Oct 31, 2006
    Ontario, Canada
    Possibly, but I think the benefits of the added life to the cpu and the rest of the logic board is well worth it. Replacing a fan is probably one of the cheapest things you can do. Also, running the fun at constant loads rather than jerking it up and down is better for it as well. Before when I ran without these settings, the fan would do a lot of speed up/slow down cycles.

    To be honest, I don't run my MB on battery enough to have a good enough feel for this (currently only at 33 battery cycles on a almost 6-month old machine). It's just a simple thing to do when running on battery to save a few precious mAh. I suspect it probably only really saves you a few minutes here and there. It's not a setting that will increase your battery life by an hour or so.
  6. winchest macrumors regular

    Aug 5, 2006
  7. brendan8 macrumors newbie

    May 14, 2007
    What is the highest RPM you can safely constantly run on a MB?

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