Simple and very effective cooling "mod" for p775dm2/p775dm3

Discussion in 'Sager and Clevo' started by tanzmeister, Apr 13, 2017.

  1. tanzmeister

    tanzmeister Notebook Evangelist

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    no, it's actually the same gpu @p7 @p8! this is gtx 1070
     
    Last edited: Apr 14, 2017
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  2. Meaker@Sager

    Meaker@Sager Company Representative

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    Same PCB but there can be slight differences in what is stuck on.
     
  3. tanzmeister

    tanzmeister Notebook Evangelist

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    I think 1070 looks same on p8 and p7
     
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  4. Mr. Fox

    Mr. Fox Undefiled BGA-Hating Elitist

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    That is possible. I have never examined a 1070.
     
  5. GreaseMonkey90

    GreaseMonkey90 Notebook Evangelist

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    Very interesting. I might give it a try once my system comes back.
     
  6. Tony Palmer

    Tony Palmer Notebook Consultant

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    Do you have any results to show improvement? I'm currently in discussion with my seller about my heatsink which makes poor contact. If this actually works then it could be a solution.
     
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  7. tanzmeister

    tanzmeister Notebook Evangelist

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    which videocard do you have and which CPU? and barebone model?

    to answer your question: I have a dramatic improvement with this mod, around 7-10 degrees off, especially on GPU.

    poor contact is a general problem with recent Clevo heatsinks, on almost all model range. your supplier has nothing to do with it, nor they can fix this. unless they do something like this

    try my mod and post your results please.

    some individual heatsinks also have a slight benefit from a thermal pads swap combined together with this mod. I will make a guide later, right now I am switching homes, so my hands are tide atm.
     
    Last edited: Apr 23, 2017
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  8. tanzmeister

    tanzmeister Notebook Evangelist

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    but beyond simple temperature drop - there is a huge benefit from this modification: and that is a possibility to use Liquid Metal on the GPU!

    FYI: p775dm3 with this mod, 6700k CLU delided, undervolted -100mv, CLU'd gtx 1080 undervolted @ 900vm stable 1860mhz both hardly go over 79 C at AIDA64 stress test FPU + CPU + Cache + GPU for 1 hour.

    and that is with Automatic Fan Profile at CC with not so loud fan noise actually. seems the profiles are made to maintain 80C and don't bother to spin faster.
     
  9. bennyg

    bennyg Notebook Deity

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    Bending the retention arms to exert even pressure on the core is something I had to do on both my GPUs (liquid metal shows it up very visibly) Then after that the heatpipe needed realignment too so it sat flush at the fan end

    Heatpipes are not strong, it is quite easy to bend them unintentionally especially if you hold them wrong and exert too much pressure on them while trying to break the 'suction' on sticky thermal paste, trying to pull heatsinks off straight up requires a *lot* more force than levering along an edge or corner
     
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  10. Tony Palmer

    Tony Palmer Notebook Consultant

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    I have a P775DM3-G with 6700k and 1080. I'm using liquid metal currently and I recently delidded my CPU. I may well try this as I mentioned earlier my contact on chips isn't great. A guide would be great do the clips and wooden section stay in permanently? Also the metal paper clip is no risk of conducting anything unwanted
     
  11. Tony Palmer

    Tony Palmer Notebook Consultant

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    My main concern would be making bad contact worse or even damaging the heatsink to the extent my warranty wouldn't replace it. First removal of my heatsink was a nightmare due to the awful paste and sheer amount used by supplier
     
  12. Prostar Computer

    Prostar Computer Company Representative

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    Using too much seems to be a commonality between some suppliers/technicians and consumers. As long as it's not electrically conductive, better to err on the side of caution and use a little bit too much than to use too little.
     
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