What causes the fan to come on?

Discussion in 'MacBook Air' started by Bakari45, Feb 11, 2011.

  1. macrumors regular

    Joined:
    Jun 17, 2010
    #1
    I’m not sure if this question has been asked before, but what causes the fan to come on? Seems like it comes mostly when I’m playing videos, bur right now I’m only running Safari and a few other low level apps. So just wondering.
     
  2. macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    More intensive tasks = increased CPU load = increased power draw = increased heat = fans required to cool the CPU.
     
  3. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    To be exact, the fans are always on. It's just that as temps are sustained at a higher level with more intensive demands on the system, the fans spin faster than normal.
     
  4. macrumors 65816

    torbjoern

    Joined:
    Jun 9, 2009
    Location:
    The Black Lodge
    #4
    Might be the flash player that hogs your resources. Have you installed ClickToFlash?
     
  5. thread starter macrumors regular

    Joined:
    Jun 17, 2010
    #5
    No I haven’t, but I‘m going to look into it, because the fan is pretty loud right now. Started getting louder when I signed in on emusic.com and sampled some music.
     
  6. macrumors 68040

    entatlrg

    Joined:
    Mar 2, 2009
    Location:
    Waterloo & Georgian Bay, Canada
    #6
    The fan on my 13" MBA roars up pretty good the moment I run win7 via VM Fusion ... kinda loud but MBA's aren't optimized to run window's either ...

    Thought about trying coolbook but my opinion is if the fans are spinning up that fast they do so for a reason ... to keep the components within a safe temp.
     
  7. macrumors 6502a

    cleric

    Joined:
    Jun 7, 2008
    Location:
    Minneapolis, MN
  8. macrumors 68000

    Joined:
    Aug 15, 2010
    #8
    Safari may seem harmless, but if you are looking at a FLASH based advertisements, you power will go up (and so the fans will turn on)
     
  9. macrumors member

    Joined:
    Apr 22, 2010
    #9
    Electricity.
     

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