Speed step in OS X?

Discussion in 'MacBook Pro' started by melterx12, Mar 10, 2011.

  1. melterx12, Mar 10, 2011
    Last edited by a moderator: Mar 10, 2011

    melterx12 macrumors 6502a

    Joined:
    Jun 22, 2010
    #1
    I was checking my cpu in cpu-z just now (MBP 2011 13") and noticed something odd... at idle the cpu stays at 2.3ghz, and does not down clock to 1.2ghz or whatever it is in windows 7 using intel speed step:

    [​IMG]

    doe Snow Leopard not support speed step?
     
  2. Transeau macrumors 6502a

    Transeau

    Joined:
    Jan 18, 2005
    Location:
    Alta Loma, CA
    #2
    It functions as designed, but it doesn't appear that 10.6.6 can report it correctly. With the new CPUs, the OS is not really involved in the process.
     
  3. aznguyen316 macrumors 68020

    aznguyen316

    Joined:
    Oct 1, 2008
    Location:
    Tampa, FL
    #3
    What exactly did you use to open cpu-z? Rosetta? I've been using some bunk winebottler but please share..
     
  4. adnoh macrumors 6502a

    adnoh

    Joined:
    Nov 14, 2010
    #4
    The CPU down clocks too? I thought it could only turbo boost?
     
  5. alust2013 macrumors 601

    alust2013

    Joined:
    Feb 6, 2010
    Location:
    On the fence
    #5
    It does underclock when not under high load to save power and reduce heat. For example, my 2.4GHz MacBook will underclock to 1.6GHz when under light loads.
     
  6. Manacit macrumors member

    Manacit

    Joined:
    Feb 19, 2011
    Location:
    New York, NY
    #6
    Unlike speedstep, all of the Turbo boosting, underclocking and core splitting is all done by a piece of hardware, not software. I'm pretty sure this means that it wont show up on most software, but rest assured, it can certainly clock up and down.
     

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