[Solved] Throttling issues with Haswell and High Sierra

Discussion in 'Hardware Troubleshooting' started by marcustiso, Nov 27, 2018.

  1. marcustiso

    marcustiso

    Joined:
    Jul 21, 2016
    Messages:
    5
    Motherboard:
    Dell XPS 8700
    CPU:
    i3-4160
    Graphics:
    HD 4400
    Mac:
    Mac mini
    Classic Mac:
    Apple
    Mobile Phone:
    Android, iOS
    Nov 27, 2018 at 9:40 PM #1
    marcustiso

    marcustiso

    Joined:
    Jul 21, 2016
    Messages:
    5
    Motherboard:
    Dell XPS 8700
    CPU:
    i3-4160
    Graphics:
    HD 4400
    Mac:
    Mac mini
    Classic Mac:
    Apple
    Mobile Phone:
    Android, iOS
    I'm having some issues with throttling.

    After a while turned on, the processor frequency drops to 800MHz, doesn't matter the temperature or power consumption. Sometimes it stays a while at the base frequency (3600MHz), but soon or after it drops to 800MHz, and the computer gets very slow. But it stays at 800MHz "forever", I need to turn off the computer and turn it on again after ten minutes to boot properly with the max frequency. It doesn't happen in Windows or Linux.

    What I had tried:

    I disabled Intel SpeedStep in BIOS, no results. This is the only CPU power management option there.
    I used this script to generate an SSDT, no results either: https://www.tonymacx86.com/threads/quick-guide-to-generate-a-ssdt-for-cpu-power-management.177456/
    I tried to set, in the SSDT script the option -lfm 3600 to use only one state (3600 MHz), but still there the CPU boots in 800 MHz.

    I uploaded my EFI here, if it helps something: https://mega.nz/#!IORQlSzA!VY0-riyqekVljXCUULN9mR4hvFuAsNPMKk7R3Gw8huo

    So... What can I do? I'm really lost right now.
     
  2. marcustiso

    marcustiso

    Joined:
    Jul 21, 2016
    Messages:
    5
    Motherboard:
    Dell XPS 8700
    CPU:
    i3-4160
    Graphics:
    HD 4400
    Mac:
    Mac mini
    Classic Mac:
    Apple
    Mobile Phone:
    Android, iOS
    Dec 7, 2018 at 5:02 AM #2
    marcustiso

    marcustiso

    Joined:
    Jul 21, 2016
    Messages:
    5
    Motherboard:
    Dell XPS 8700
    CPU:
    i3-4160
    Graphics:
    HD 4400
    Mac:
    Mac mini
    Classic Mac:
    Apple
    Mobile Phone:
    Android, iOS
    After days of struggle I find out that my motherboard is defective, since I realized the problem happens in Windows too. The throttle happens because VRM gets too hot, seems like a faulty capacitor. Not hackintosh related at all.

    So the post can be marked as "solved".
     

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