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Undervolting latitude 7390 i7-8650u?

Discussion in 'Dell Latitude, Vostro, and Precision' started by danielhaughton, Sep 1, 2018.

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  1. danielhaughton

    danielhaughton Newbie

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    Wondering if anyone has some advice on what values to start with undervolting on the 7390 i7 8650u?
     
  2. custom90gt

    custom90gt Doc Mod Super Moderator

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    Sadly I do not, but I will tell you my experience with lower power CPUs means you have to be more conservative. The couple of i5-8250u processors that I've had it a max of 65mv and 70mv. I would try around there first and then test it out. It doesn't seem to be a problem with the maximum frequency but as it changes load. One thing I would do is run prime95 for a couple of minutes and then stop the test and wait for a minute then repeat that process 4 or so times. You'd be surprised how many 12+ hour prime95 stable undervolts I've had that will fail this test.

    AIDA64 is also a good test to run since it fluctuates the load a little bit.
     
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  3. baalph

    baalph Newbie

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    I have it stable on - 90mv. Tested over last 5 days, mostly gaming on egpu

    Sent from my ZUK Z2121 using Tapatalk
     
  4. guidaki

    guidaki Newbie

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    @baalph, you have a 7390 also? How are the temps of cpu while gaming on egpu? I got myself a 7390 and that's what i aim for.
     
  5. baalph

    baalph Newbie

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    Yes. I use custom performance mode for battery and it allows me - 130 undervolt. In most of the games I have stable 3.8-3.9 frequency. I use it with 1080ti which is overkill tho.

    Sent from my ZUK Z2121 using Tapatalk
     
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