Macbook downclocked at half speed b/c no battery?!

Discussion in 'MacBook' started by chriz74, Mar 8, 2018.

  1. chriz74, Mar 8, 2018
    Last edited: Mar 8, 2018

    chriz74 macrumors member

    chriz74

    Joined:
    Sep 11, 2014
    Location:
    Italy
    #1
    I was given an old Macbook 4,1 from a friend. It came without battery and with the lcd lamp broken.
    I was able to save it from extinction by replacing the lamp. Then yesterday I decided to install windows 7 and I found out that the cpu is downclocked to half speed! Then looking around on google it seems this is because there is no battery mounted so it gets downclocked! This is insanity!
    There are plenty of laptops from this era that work just fine without battery, I never ever found anything like this on a regular laptop pc. Is there a way to disable this absurd behavior that anyone knows of apart buying a battery?

    [​IMG]
     
  2. Pockett macrumors member

    Pockett

    Joined:
    Oct 11, 2015
    #2
    Under your power plan setting, is your maximum processor state 100%?
     
  3. Chrizx74 macrumors member

    Chrizx74

    Joined:
    May 14, 2016
    #3
    Yes it’s all set to max and the power profile is set to max performance.
     
  4. BrianBaughn macrumors 603

    BrianBaughn

    Joined:
    Feb 13, 2011
    Location:
    Baltimore, Maryland
    #4
    No, that is the way it is. I'm thinking your GPU may also be at half speed.

    Get a battery off of Amazon...under $30. Make sure it's "returnable" as third-party batteries are hit and miss.
     
  5. chriz74 thread starter macrumors member

    chriz74

    Joined:
    Sep 11, 2014
    Location:
    Italy
    #5
    I ordered a battery however in the meantime I tried this: removed AppleIntelCpuPowerManagement.kext & AppleIntelCpuPowerManagementClient.kext from S/L/E and installed SleepEnabler.kext (10.8 compatible) and NullCpuPowerManagement.kext. It doesn't make any difference, geekbench score is identical before and after. This behavior must be controlled at EFI level.
     

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4 March 8, 2018