Infamous whinning on MBP gone?

Discussion in 'Windows, Linux & Others on the Mac' started by theonlyrealj, Apr 5, 2006.

  1. macrumors newbie

    Apr 5, 2006
    Running on XP I don't hear the whinning noise coming out of the MBP anymore. Anyone else?
  2. macrumors newbie

    Apr 6, 2006
    same here. no cpu whine under xp. strange.
  3. macrumors 68000


    Apr 5, 2005
    My Mac
    Firmware update may have fixed this. How 'bout running under OSX? Does it
    get noisey again?
  4. macrumors newbie

    Apr 6, 2006
    yep, same noise under OS X as it was before.
  5. macrumors regular


    May 28, 2005
    New York
    I still have the whine after the firmware update as well. I heard on slasdot a few days ago that Apple was replacing the motherboards. Do you think they would still do it. Mine is the rev A mobo (W8608...)
  6. macrumors regular

    Mar 10, 2006
    Same here. After the update i do not hear the processor whine while in XP. When i do return to OSX, i heard it and its damn annoying. Didn't really realize it until i booted up XP. WEAK!!

  7. macrumors 601


    Mar 20, 2005
    Oneida, NY
    Windows is running better on Macs than OS X is. This is awesome. :D

  8. thread starter macrumors newbie

    Apr 5, 2006
    Funny comment! Here's my opinion of why the noise goes away...

    In windows you can change the refresh rate of the screen, however, as far as I know Mac OS doesn't have this option. So, maybe the noise is related to a refresh rate issue, perhaps windows utilizes a different refresh rate (mine uses 60Hz) and this causes the noise to go away. Afterall, the noise is evidently coming from something like a resistor or converter in the upper left corner of the computer near the power plug, and also close to where all the wires that connect to the screen. Oh also, higher frequencies use more energy, so perhaps at a lower refresh rate a converter stops working so hard and the noise goes away.
  9. Moderator emeritus

    mad jew

    Apr 3, 2004
    Adelaide, Australia
    But they're LCDs. :confused:
  10. macrumors 65816


    May 23, 2005
    Great White North
    Could be completely wrong here, and please let me know if I am, but could it be because windows only uses one of the cores where OS X uses both :confused:
  11. macrumors 65816

    Feb 24, 2004
    I know you said you were kidding but there seems to be some interesting characteristics man! Whine disappears (who knows what this is, but something in MacOSX) and things (to me) seem...snappier.

    As I said before: "[Apple] must be pretty pleased/confident with OSX at the mo as it's going to take some beating - what with BareFeats reporting that OpenGL rendering is faster and all."

  12. thread starter macrumors newbie

    Apr 5, 2006

    Hmm, I didn't realize that refresh rate doesn't apply to LCD's. Good point. Nevertheless, it does beg the question: Is the noise related to the LCD? I think so.
  13. Moderator emeritus

    mad jew

    Apr 3, 2004
    Adelaide, Australia

    Yeah good thinking. I wonder if people who have manually turned off a core in OSX get the whine. :)
  14. thread starter macrumors newbie

    Apr 5, 2006
    I just posted a thread that confirms that XP does indeed use both cores so that hypothesis must not be what's causing the noise.
  15. macrumors G4


    May 26, 2005
    Working for MI-6
    Windows XPee running better on Macs than OS X...... that is a scary thought! :eek: ;) :)
  16. macrumors 6502

    Jan 11, 2006
    surely it's just that windows is using more processor at when its just sitting there than Mac OSX does?
  17. macrumors 603


    Oct 16, 2003
    I thought the whine was a result of the processor going into power saving mode. My guess it that the power saving mode isn't supported in the default Win XP install.
  18. thread starter macrumors newbie

    Apr 5, 2006
    Relationship between screen flicker and annoying whine

    Hey everyone, I was looking on's discussion forums and found out that there may be a relationship between the screen flicking issue (read the link below) and the whine that we all loathe. Check it out for yourself (its near the bottom of the thread):

    Perhaps, this does suggest that there is a relationship between the screen and the whine as I posted before in this thread, rather than chiefly a processor issue.

    Also, photo booth solves both the flicker and whine issue.
  19. macrumors 6502

    Oct 26, 2005
    Just that windows power management isn't as efficient as OSX. So the CPU uses more power and the voltage regulator is under a different load so doesn't make the noise.
    You'll notice that battery life is also far worse under XP.
  20. macrumors 65816


    Feb 4, 2006
    I have no whine either, in XP.

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