CPU makes a Chirping/Squeeking/Zipping sound

Discussion in 'Mac OS X Lion (10.7)' started by MrCheeto, Aug 30, 2011.

  1. MrCheeto macrumors 68030


    Nov 2, 2008
    I don't hardly know how to describe this sound, but it never occurred until minutes after upgrading to Lion.

    My model is a 2009 MacBook Pro 13".

    I can tell it's clearly the CPU making the sound. If you listen to the attached recording, you can hear the CPU whining as it normally does, but the whining ducks as the chirping is heard!!!

    This occurs about every thirty seconds to a minute, even while I'm doing nothing at all on the Mac.

    The following sounds are of the vent-area of the Mac. You can hear the fans, the hard drive accessing for a moment, and then finally the chirp.

    What in the hell?

    Attached Files:

  2. maflynn Moderator


    Staff Member

    May 3, 2009
    Could it be feedback into the speaker? My old G4 Powerbook had noise issues where there was interference causing noises to come from the speaker.

    btw, you're probably going to get a lot of posts stating that the the CPU cannot make noise given the design, (just a piece of silicone) buried in thermal grease, encased in a heat sync. I'm one of those people ;)

    That sound has to be generating from some other component
  3. MrCheeto thread starter macrumors 68030


    Nov 2, 2008
    Not at all. All CPU's make sound...really! Do you recall the "moo'ing" MacBook Pro's?

    My Mac, along with anybody's processor, makes a constant low-volume whine, as is heard constantly through the recording.

    By the way, when you turn the speaker volume completely down, there are times when you can hear the speakers "click" on as they receive initial voltage. With my speakers off, I don't hear them click on.

    Finally, the last bit of evidence is that the normal CPU whine actually ducks around the chirp, confirming that it is coming from the CPU.
  4. AJ-X, Aug 30, 2011
    Last edited: Aug 30, 2011
  5. MrCheeto, Aug 30, 2011
    Last edited: Aug 30, 2011

    MrCheeto thread starter macrumors 68030


    Nov 2, 2008
    Oh is that a fact?

    "every computer we tested showed significant correlation between acoustic spectrum and CPU activities, and in about half the cases the effect could be heard by naked ear when using appropriate CPU activity patterns."

    You were saying...?

  6. RJCP macrumors 6502

    Jun 8, 2011
    I have a late 2008 13'' Alum MB and I get exactly the same problem when my system is too idle. It usually stops if I scroll up or down or if I put the CPU to work. There's this app that basically makes the CPU process irrelevant things in order to prevent the whine, but after a while it starts to make the processor work too much and the fans kick off. There's tons of people with this problem.
  7. AJ-X macrumors newbie

    May 8, 2011
    Ok, i'll admit I was wrong and I should not have posted without knowing answer for definite. I'm sorry but you are very rude and there is no need for it. You could have just as easily posted the link to the article without the rude remarks.

    Calling people 'ill-educated nooberts', 'under-educated', 'naive', 'under-experienced' and 'over-privileged' without knowing them is totally unacceptable and shows others that your not a mature adult.

    As I said I am sorry that I posted without knowing about the issue you were describing and thank you for posting the link to the article about CPU noise, I will never make that mistake again. :)
  8. MrCheeto thread starter macrumors 68030


    Nov 2, 2008
    I'm not, though.So where's the discrepancy? :D

    You learn something new every day. Today, in fact, I learned that armadillos can't dodge traffic for ****. Sounded like running over a plastic bottle with the cap still secured...
  9. filfortugno macrumors regular

    Jul 1, 2010
    Montreal, Quebec, Canada
    Pff seems like Cheeto's just a jerk, i think the whining he hears is just the echo of his voice in that lonely room of his.
  10. iPadThai macrumors 6502a

    Apr 25, 2010

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