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    i7-6700HQ or i7-6820HK for undervolting

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by cacotigon, Sep 28, 2016.

  1. cacotigon

    cacotigon Newbie

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    I'm never going to overclock my laptop, but I'm really interested in the idea of undervolting. If I'm looking to under-volt for the explicit purpose of cooling the system during gaming, which one of these CPUs would be better suited?

    They seem pretty similar in features, just wondering about people's experiences. This is in a Clevo.
     
    cacotigon, Sep 28, 2016
    #1
  2. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    Undervolting, just like overclocking, is the luck of the draw. And ultimately it will not be a night and day difference between the two processors (undervolting).

    I'd always buy the higher performance processor for any platform I'm keeping past 18 months or so.

    See:
    http://www.cpubenchmark.net/compare.php?cmp[]=2586&cmp[]=2616

    With about 6% faster single thread responsiveness and almost 13% better multithreaded prowess, the i7-6700HQ would have to be considerably cheaper ($200 or more) for me to consider it over the i7-6820HK today.
     
    tilleroftheearth, Sep 28, 2016
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  3. Boggot

    Boggot Notebook Enthusiast

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    Thanks for the info. I feel happier now that i opted for the 6820 :)
     
    Boggot, Sep 30, 2016
    #3
  4. Kana Chan

    Kana Chan Notebook Evangelist

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    6820HK is already lower voltage than the 6700HQ at the same TDP
     
    Kana Chan, Sep 30, 2016
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  5. D2 Ultima

    D2 Ultima Livestreaming Master

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    That depends on each specific chip. You can't make such a blanket statement.
     
    D2 Ultima, Sep 30, 2016
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  6. TomJGX

    TomJGX I HATE BGA!

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    For the BGA chips which seem to have the absolute garbage binning especially in the earlier ones, I have to totally agree with you D2... Even the Skylake ones, especially a lot of 6820HK's require a lot more voltage compared to 6700K to run at similar clocks...
     
    TomJGX, Sep 30, 2016
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  7. Miguel Pereira

    Miguel Pereira Notebook Consultant

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    I'll keep posting my 6820hk UV limits. I think mine go something like -130-150mv to keep 3.8Ghz on all cores. The temperatures are great with the -125mv I have currently (didn't had time to test more). With 3.8Ghz is crashs if I try higher then 180mvs.
     
    Miguel Pereira, Sep 30, 2016
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  8. encheels

    encheels Notebook Consultant

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    Have you got screenshot of your setup?what about thermal/TDP throttle?
     
    encheels, Oct 6, 2016
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  9. Papusan

    Papusan Jokebook's Sucks! Dont waste your $$$ on Filthy

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    6700Hq vs 6820Hk is more like a choice between plague and cholera. Both Awful badly binned, but 6700Hq win the title Garbage!! Maybe one of the worst low end i7 in history.
     
    Papusan, Oct 6, 2016
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  10. Miguel Pereira

    Miguel Pereira Notebook Consultant

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    My setup? How so?
    With-125mV and 3.8ghz on all cores I don't have Throttle and thermals are around 80-85ºC on long gaming sessions (Witcher 3). On a 3dmark bench I get around 75-77ºC.

    My G752VS is stock, so I guess these are good values. Without undervolting I had throttling and CPU temps go to 97ºC.... So Undervolting is a must for this model. I guess that a repaste would help a lot, but as long as I'm in warranty period i'm not opening the laptop.
     
    Miguel Pereira, Oct 7, 2016
    #10
  11. TomJGX

    TomJGX I HATE BGA!

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    Yeah lol 6700HQ is horrible.. 3.1GHz lol... Haven't had such a low speed on a CPU since my 740QM lol..
     
    TomJGX, Oct 7, 2016
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