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

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

  1. Eason

    Eason Notebook Virtuoso

    Reputations:
    183
    Messages:
    2,143
    Likes Received:
    729
    Trophy Points:
    131
    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.
     
    Vasudev likes this.
  2. Vasudev

    Vasudev Notebook Nobel Laureate

    Reputations:
    3,977
    Messages:
    7,072
    Likes Received:
    4,723
    Trophy Points:
    431
    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 nͫٴiͤٴcͫٴeͤ੮Һ૯ ცɿ૭ ૭คעٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴٴ

    Reputations:
    3,296
    Messages:
    8,894
    Likes Received:
    6,212
    Trophy Points:
    681

    core/cache can do at least 50mv

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

    igpu at least 45


    Undervolted on an i5 7300U
     
    Vasudev likes this.
  4. Vasudev

    Vasudev Notebook Nobel Laureate

    Reputations:
    3,977
    Messages:
    7,072
    Likes Received:
    4,723
    Trophy Points:
    431
    I was able to get -80mV on all parts with i5 7300.
     
  5. mikolajek

    mikolajek Notebook Enthusiast

    Reputations:
    0
    Messages:
    31
    Likes Received:
    2
    Trophy Points:
    16
    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 In the Pipe, Five by Five.

    Reputations:
    338
    Messages:
    3,616
    Likes Received:
    1,822
    Trophy Points:
    231
    Undervolting the GPU should be harmless - if you go too low you'll just crash and need to reset.
     
  7. Joikansai

    Joikansai Notebook Evangelist

    Reputations:
    55
    Messages:
    336
    Likes Received:
    141
    Trophy Points:
    56
    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.
     
    Vasudev and Vistar Shook like this.
Loading...

Share This Page