GTX 1070 on HP EliteBook 8770W DC - it works!

Discussion in 'Hardware Components and Aftermarket Upgrades' started by mirage_bg, Oct 31, 2019.

  1. mirage_bg

    mirage_bg Notebook Evangelist

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    Thanks a lot , Mr. Fox!

    Can you explain me why this happens - when I set, for instance 1645Mhz and try to play with the voltages - the lower the voltage goes the worse the GPU performs...
    This way is pointless to UV as with every step down of the voltage the fps in games go down too - no matter the GPU works at 1645Mhz all the time...just don’t get it. I thought that UV will helps only by reducing the temps, not the performance.
     
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  2. yrekabakery

    yrekabakery Notebook Virtuoso

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  3. Mr. Fox

    Mr. Fox BGA Filth-Hating Elitist

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    If you select the voltage slider dot for the voltage value you want, and slide it up to the core clock you want, and then hit the apply button (without moving any of the other dots) that generally works best for me. I get worse performance if I try manipulating multiple slider dots to build my own voltage curve. When I try farting around with a custom curve, the core clocks end up being lower than I want them to be. When I used the single slider dot method the core clocks change far less and benchmark scores are higher than they are with a higher core clock setting that doesn't hold under load. Performance is best when I press "L" and apply and lock it. If you want the GPU to idle and cool down more when there is no load then you have to release the lock (same way "L" and apply) or switch to an unlocked Afterburner profile.
     
    Last edited: Nov 6, 2019
  4. mirage_bg

    mirage_bg Notebook Evangelist

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    Let me explain clearer what I do- basically I don’t mess with the other dots, but the one that corresponds with the frequency I’d like to use for games/benches. In this case this is 1645Mhz at the corresponding voltage for this frequency in my case is 0.891V.
    If i try the dot of 0.885V and reise it up to the level of 1645Mhz then press ctrl+L and apply, I get worse performance than when I locked it down with ctrl+L at the default 0.891V.
    Every step down of the voltage leads to worse performance of the gpu in games/benches. At 0.891V I get 17300pts gpu graphics in FS, at 0.885V - 17100 and so on.
    My card works even at 0.791V on 1645Mhz, without messing with the voltage curve, just locked the corresponding to 1645Mhz dot with ctrl+L, but then the pts in FS are 15700(!!!)...
    Pretty much what this guy on the video explains.
    How to proceed in this case? I have to sacrifice performance for UV/better temps...
     
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  5. Mr. Fox

    Mr. Fox BGA Filth-Hating Elitist

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    Pascal and Turing firmware is an absolute mess and a joke.

    Maybe the voltage value you are trying to apply is too low based on whatever firmware algorithm cancer they have employed. It could also be power limit throttling or voltage limit throttling. Do you see any PerfCap reasons in GPU-Z?

    I am generally trying to do the exact opposite and making every effort to lock my voltage as high as possible to support the highest possible overclock. My 2060 will hold like 1750MHz with .825V. Maybe you should try using a different vBIOS to see if it changes anything.

    Also check NVIDIA Control Panel to verify the Power Management Mode is set to "Prefer maximum performance" and you are overriding the GPU behavior (rather than letting the GPU decide). Optimal and Adaptive performance modes will prevent the GPU from reaching and holding full boost clocks.

    If I undervolt the 9750H in my MECH-15 too much it loses clock speeds and wont hold turbo clocks under load. (Of course if I go too too low it will throw a BSOD.)
     
    Last edited: Nov 6, 2019
  6. yrekabakery

    yrekabakery Notebook Virtuoso

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    Do you get better results if you move the whole curve up and then lock it at a point?
     
  7. 606320

    606320 Notebook Enthusiast

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    Hi Mirage_bg,

    i just wrote a private message in german. I also bought a GTX 1070 MXM card, but i have some problems to install it, so please could you explain, what you did? Which bios did you use? What are the changes to the inf-File, which driver did you use?
    thanks for your help
     
  8. jc_denton

    jc_denton BGA? What a shame.

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    I found that best performance for all the steps in the curve would be to use +150Mhz core off set, or whatever your max stable OC is and simply lock the voltage to a desired point. That way you get your highest frequency for the voltage step, and should the card go down a few notches from that, it will still retain performance pr step.
     
  9. mirage_bg

    mirage_bg Notebook Evangelist

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    Hi, sorry it seems Tapatalk won’t send PMs right now, don’t know why...
    What us the problem on your side?
    Does your 8770W have DC screen?
    My vBios is ver. 86.04.42.00.03
    You need to mod the nvcvi.inf file
    The driver is 386.69 , but you can use 391.35 too. Above 391.xx you need to reflash the EDID rom of the DC panel as it won’t let you open 10bpc if you don’t - this is problem with win 10 + DC + newer than 391.xx drivers.
     
    Last edited: Dec 31, 2019
  10. mirage_bg

    mirage_bg Notebook Evangelist

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    After a bit of modding of the cooling system of my 8770W - adding two additional heatpipes and 19-leaf fan from zBook 17 G1/2, the max temp of the GPU with +150Mhz core and +300Mhz mem OC pulling ~140W is max 79C, in most scenarios - around 68-73C:

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]
     
    Last edited: Jan 3, 2020
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