New SMCFan Control--1800 RPM min fan speed?

Discussion in 'MacBook Air' started by puma1552, Apr 9, 2009.

  1. puma1552 macrumors 601

    Joined:
    Nov 20, 2008
    #1
    What's up with this in the newest version of SMC that just came out today? The min now goes below the original 2500 RPM that the Apple engineer's decided on??
     
  2. TheRiseofTheFal macrumors regular

    TheRiseofTheFal

    Joined:
    May 9, 2008
    Location:
    Lexington
    #2
    i just updated and that option isn't present on mine... hmmmm
     
  3. maclover001 macrumors 6502a

    maclover001

    Joined:
    Mar 25, 2008
    Location:
    Vancouver, Canada
  4. dudeitsjay macrumors regular

    Joined:
    Mar 26, 2009
  5. tsubikiddo macrumors regular

    Joined:
    Mar 15, 2008
    Location:
    Melbourne, AUS
    #5
    just updated,
    My MBA can't spin slower than 2.5k rpm either:confused:
     
  6. mrossi macrumors newbie

    Joined:
    Jan 21, 2009
    #6
    Yep, i have this too - 1800rpm is the new min. Seems to work fine.

    (rev.b 1.8 w/ssd)
     
  7. fr4c macrumors 65816

    fr4c

    Joined:
    Jul 27, 2007
    Location:
    Hamster wheel
    #7
    Mine was also set to the new default of 1800rpm, but I manually changed it back to 2500rpm.
     
  8. tubbymac macrumors 65816

    tubbymac

    Joined:
    Nov 6, 2008
    #8
    Any difference in noise between the 2500 rpm and the 1800 rpm? I can't even hear my fan at 2500 rpm anyway so I'm thinking 1800 is unnecessary.
     
  9. tsubikiddo macrumors regular

    Joined:
    Mar 15, 2008
    Location:
    Melbourne, AUS
    #9
    solved the problem.

    I AppZapped smcFanControl and got rid of the .plist file as well
    then I put my Recover Disc in and run a Permission repaid just to be safe
    Once, done, re-install the latest ver.
    BOOM~!

    I can put my MBA to spin @1.8k rpm now

    I am not sure if that necessarily translates to more battery hrs,
    but I need every single drop of the battery due to my daily routine and it sounds right even if it doesn't necessarily give me more batt life.

    just my share of exp:)
     
  10. mrossi macrumors newbie

    Joined:
    Jan 21, 2009
    #10
    I noticed a difference, albeit a very small one, but was in library at the time...so in "normal" environments i guess its probably not noticeable.

    Probably more like battery seconds? I guess lower rpm=lower voltage? So maybe some power being saved there, but I noticed my temps start to jump up faster now when doing anything of consequence, probably due to the fan speed being set lower initially, so the fan revs up earlier than if the min was 2500rpm...any power saving is probably offset by this. Maybe its even worse...though i guess idle/standby times would benefit if it stays at 1800 for any extended period of time?

    Lots of assumptions there :S
     
  11. tsubikiddo macrumors regular

    Joined:
    Mar 15, 2008
    Location:
    Melbourne, AUS
    #11
    Since I re-applied AS5, my MBA constantly stays @~39C (2500rpm)
    I have yet to test drive the battery performance with 1800rpm min.
    but yes, temp does increase, it's 42C(±1) while I am typing this

    it's cold from the land down under,
    wouldn't mind to cook my Air a little bit:rolleyes:
     
  12. kaku945 macrumors newbie

    Joined:
    Jan 15, 2009
    #12
    I highly doubt if it is the best thing to do. It runs at 1800rpm for a min or two then probably easily jump to 4000rpm then never drops back to 2500...
     
  13. tsubikiddo macrumors regular

    Joined:
    Mar 15, 2008
    Location:
    Melbourne, AUS
    #13
    I use Word, pdf Fx3 and WiFi in sch, these won't heat up my MBA much
     

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