Change processor settings?

Discussion in 'MacBook Pro' started by EvryDayImShufln, Dec 11, 2006.

  1. EvryDayImShufln macrumors 65816

    EvryDayImShufln

    Joined:
    Sep 18, 2006
    #1
    Hi I have a MBP C2d and I'm wonderinf if theres any way to change the processor settings, ie High performance, low, etc. Didnt there used to be an option to do this? Anyway is there any way to bring this option back? Thanks
     
  2. WildCowboy Administrator/Editor

    WildCowboy

    Staff Member

    Joined:
    Jan 20, 2005
    #2
    In the Energy Saver preference pane (Options sub-pane), there should be a dropdown menu for processor performance with "Automatic," "Highest," and "Reduced" options. You can use one of the preset optimizations from the menu near the top of the pane, or you can customize it.
     
  3. EvryDayImShufln thread starter macrumors 65816

    EvryDayImShufln

    Joined:
    Sep 18, 2006
    #3
    I have 3 options but they do not seem to pertain to the processor itself but instead the energy settings of the entire system. I'm wondering that if I put highest and then change the hard drive to shut off (for example), it switches to custom: but will the processor still be working as hard as on the highest setting?
     
  4. WildCowboy Administrator/Editor

    WildCowboy

    Staff Member

    Joined:
    Jan 20, 2005
    #4
    Right...you're talking about the options up at the top, which do refer to a combination of perfomance-related pieces of the system. The options define preset "profiles" for common usage needs. Changing any one of the individual pieces of a profile then makes it a "Custom" profile.

    Specifically changing the processor performance, as I mentioned, is done at the bottom of the "Options" sub-pane.
     
  5. kraftzwerg macrumors regular

    Joined:
    Jul 8, 2005
    #5
    I don't think this exists for the Intel-based Macs.
     
  6. NJuul macrumors 6502

    Joined:
    Mar 15, 2006
    Location:
    Boston
    #6
    The C2D CPU scales itself up and down depending on the load on the system. There is no manual setting for this.
     
  7. WildCowboy Administrator/Editor

    WildCowboy

    Staff Member

    Joined:
    Jan 20, 2005
    #7
    Ah yes...I think you're right. I hadn't heard about that, but a little searching on my part suggests that you are correct. The Intels now manage processor performance automatically.

    ***kicks PowerBook to the curb***
     
  8. EvryDayImShufln thread starter macrumors 65816

    EvryDayImShufln

    Joined:
    Sep 18, 2006
  9. sir. mac macrumors regular

    Joined:
    Nov 21, 2006
    #9
    Actually it is possible to turn off one of the cores, using some kind of developer-tool- I´ve asked around but haven´t got any good replies on how to. Also, there is a tool called coolbook, which supposedly let´s you adjust processor-speeds and voltage, but it is rumored to actually increase the temperature, and should probably not be used when it´s running on battery. As in my case I need to find something to heighten the battery-time... If anybody knows how to turn off one of the cores I´d really like to know!

    http://www.xlr8yourmac.com/feedback/coolbook_utility/coolbook_utility_tests.html
     
  10. NJuul macrumors 6502

    Joined:
    Mar 15, 2006
    Location:
    Boston
    #10
    It's called CHUD, and is located on one of the install discs. You get a menubar item that shows you how many cores are running, and the ability to turn one off (or more probably, if you have a mac pro). However, when you're only running with one core, it doesn't scale up and down, instead it runs at maximum speed all the time (eg. 2 ghz), and this presumably consumes more power than when you're running two cores at 1 or 1.5 ghz, as the CPU gets really hot, and the fans start running at high speed.
     
  11. sir. mac macrumors regular

    Joined:
    Nov 21, 2006
    #11
    Thanks Njuul! But guess I can forget about extended battery-times then, sigh
     

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