New ASUS Zephyrus M GM501 - How to undervolt it ?

Discussion in 'ASUS Gaming Notebook Forum' started by TheMisterJAP, Oct 19, 2018.

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  1. TheMisterJAP

    TheMisterJAP Notebook Enthusiast

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    Just looking for the best guide/advice on how to undervolt my new computer. I thought it was getting hot (85/90°) when playing some games like COD4. Is there anything else I should consider doing as well?

    Thanks!
     
  2. Support.3@XOTIC PC

    Support.3@XOTIC PC Company Representative

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    Throttlestop should do it. It doesn't go over 90 does it?
     
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  3. PopeMuShin

    PopeMuShin Notebook Enthusiast

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    http://forum.notebookreview.com/threads/the-throttlestop-guide.531329/ <--- This really helped me get a handle on this powerful application.

    Most of us have found our Zephyrus M to favor:
    -Speed Shift on at 128 (some resolving stutter in games by lowering to 110 - 120), lower numbers tends to increase overall temps.
    -CPU core current -125mv
    -CPU cache current -50mv

    Do some testing under heavy load after you make your changes are stable. You should be able to find a sweet spot that will allow you to keep cpu/gpu in the mid 70's under most load conditions like gaming, with maybe some spiking up into low 80's. Add a few degrees to these estimates if you are in a warm/hot room.
     
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  4. Mask-

    Mask- Newbie

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    I'm going to receive my own GM501 in the near future, and I'm looking how to prepare myself.
    I thought that when it came to undervolting the rule of thumb was to keep CPU core & cache currents equal, and yet you're showing something different.

    Is there something I misinterpreted? =
     
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  5. IXVIXXII

    IXVIXXII Notebook Consultant

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    As it is not an OC'able CPU I prefer throttlestop too for this one. The settings above work really well, I can confirm.
     
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  6. PopeMuShin

    PopeMuShin Notebook Enthusiast

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    No you are right in thinking this, but for some reason on this model we are finding stability at these settings.
     
  7. Mask-

    Mask- Newbie

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    Aha. Fair enough.
    Can't wait to test it out when I get it and see those low temps >:)
     
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  8. TheMisterJAP

    TheMisterJAP Notebook Enthusiast

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    Have been using these settings and it works great! Temps are around 75 most of the time.
    I tried undervolting the CPU cache down to -125 yesterday and got a blue screen while playing. So yeah, even though it's weird you should leave it a -50 even if the the core is at -125
     
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  9. Dennismungai

    Dennismungai Notebook Deity

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    Not necessarily.

    In this model, in particular, the undervolt settings for the uncore (and cache) are very tight, and anything below 50mV will trigger a BSOD on Windows (and unrecoverable MCE errors on Linux).
    What you want to focus on in this particular model is the core undervolt: 125mV is the sweet spot. The uncore undervolt at 50mV is a bonus.
     
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  10. Dennismungai

    Dennismungai Notebook Deity

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    Not at all. However, in this particular case, the disparity between the core and uncore undervolt is needed for stability.
    Post-Skylake, Intel chips favor undervolting, responding with better thermals and performance as a trade-off.
     
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