macbook pro 2011 fan sound

Discussion in 'MacBook Pro' started by tehbluecruiser, Oct 2, 2011.

  1. tehbluecruiser macrumors newbie

    Joined:
    Jul 26, 2011
    #1
    As soon as I start my mac, I can hear the fan. The cpu is only about 35 degrees, and the fan is hitting about 1995-2000 rpm. Why is this?
     
  2. TheJing macrumors 6502a

    TheJing

    Joined:
    Jun 13, 2011
    Location:
    Somewhere in Europe
    #2
    That is the default speed. If you can actually hear your fans when they are going 2000rpm there might be something wrong with your computer. I mean you have to try to hear them in order to.

    Can you name one computer that has quieter fans?
     
  3. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #3
    Could also be the hard drive. Some hard drives(especially 7200rpm ones) make a constant whooshing sound that sounds just like a fan.
     
  4. Freddy1765 macrumors member

    Joined:
    Sep 21, 2011
    #4
    Isn't there any software for OS X similar to SpeedFan?
    Would be pretty easy to test and see if it is the fan by reducing the speed.. and if it's only 35C anyway, there's no point in not reducing rpm a bit.
     
  5. Prodo123 macrumors 68020

    Prodo123

    Joined:
    Nov 18, 2010
    #5
    smcFanControl
    2000RPM is the minimum speed.
     
  6. Young Spade macrumors 68020

    Joined:
    Mar 31, 2011
    Location:
    Tallahassee, Florida
    #6
    No? That's the problem, so many uninformed people here spreading rumors.

    I can hear mine at 2k in a quiet room; if you AREN'T DEAF you can hear them in a quiet room as well.

    I love it when people jump the shark and assume there's a problem because they don't have the same results in relation to something like sound.

    But get SMCfancontrol. Have it, love it. Shows temperature of cores and fan speed; I have the default (system control), 4k, and 6k settings that I switch between depending on what I do.
     
  7. BrickbookPro macrumors regular

    Joined:
    Jul 26, 2011
  8. tehbluecruiser thread starter macrumors newbie

    Joined:
    Jul 26, 2011
    #8
    No theres no disk in the drive, and I can only hear the hard drive if I put my ear against it. I just thought it was weird that I hadn't noticed this noise before. Its quiet, but audible, like a slight hum coming from the back of it. But it is kinda strange.
     
  9. Young Spade macrumors 68020

    Joined:
    Mar 31, 2011
    Location:
    Tallahassee, Florida
    #9
    Get SMC fan control. Turn the fans up to 4k or 6k. Put your ear there. Then turn them back down to 2k(default) that should give you an idea if it's the fan or not (due to sound)

    You could look at pictures and see what exactly is under there, at that point, or take the bottom plate off yourself and see.
     
  10. dusk007 macrumors 68040

    dusk007

    Joined:
    Dec 5, 2009
    #10
    True I can hear them too. But there are also loads of people who cannot distinguish between the HDD sound and the fans and you cannot hear the fans if an HDD is running because that one is a lot louder.
    You can only hear the 2000rpm fans if you run of an SSD or the HDD sleeps at the moment, yet many people hear the HDD and think it is the fans.
     

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