how much can you undervolt an i7 7500u in a stealth?

Discussion in 'Razer' started by Esaelias187, Sep 20, 2017.

  1. Eason

    Eason Notebook Deity

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    Interesting; I haven't noticed that. I did not know about the ring/core voltage, either. I will try decreasing my ring undervolt and increase the core undervolt.
     
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  2. Vasudev

    Vasudev Notebook Prophet

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    Use same values for CPU, cache, Analog IO and System Agent, so if undervolt causes instability you can decrease everything for easier diagnostic/troubleshooting.
     
  3. Mobius 1

    Mobius 1 nͫiͤcͫeͤ

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    core/cache can do at least 50mv

    analog/sa is +10mv compared to core/cache

    igpu at least 45


    Undervolted on an i5 7300U
     
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  4. Vasudev

    Vasudev Notebook Prophet

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    I was able to get -80mV on all parts with i5 7300.
     
  5. mikolajek

    mikolajek Notebook Enthusiast

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    In my case (i7-7500U) I've managed to go -80 mV on the CPU, going under that threshold gives me an almost instant BSOD.
    For GPU I've gone for -60 mV, as I read that GPU should not be undervolted that much (so it's possible I could go lower). Though the ThrottleStop guide says the values for CPU and GPU should be the same... And earlier in this thread someone said that GPU should not be undervolted at all. ;)
     
  6. don_svetlio

    don_svetlio Notebook Virtuoso

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    Undervolting the GPU should be harmless - if you go too low you'll just crash and need to reset.
     
  7. Joikansai

    Joikansai Notebook Enthusiast

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    My i7 7500, stable at -90 mV, the difference is noticeable when playing with the core setting CPU intensive games like AC Origins, without it the game would crash due thermal that goes over 90 that bring unstable FPS (stuttering because throttling) in my guess, with that uV value I keep the thermal under 89 and finished the game. On other games like OW, destiny 2 I don’t need uVing.
     
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