Better GPU fan

Discussion in 'Sager and Clevo' started by Danishblunt, Oct 9, 2018.

  1. t6nn_k

    t6nn_k Notebook Consultant

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    Nice!
    Going to do the same as my fan started to make strange sounds.
     
  2. Danishblunt

    Danishblunt Guest

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    Keep in mind that a better fan can not make a difference if your heatsink fit is to bad.
     
  3. t6nn_k

    t6nn_k Notebook Consultant

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    I went ahead and installed P870DM fan. Had to grind it few mm shorter and taped it to heatsink with foil tape. I think it is safe to say my temperatures dropped at least 8 degrees! Noise level is about the same.

    Now I wonder what can be done with slave GPU fan to make it perform more closer to master. Unigine Heaven loop max temps were 72C (master) 84C (slave).
     
  4. kothletino

    kothletino Notebook Consultant

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    I follow, parcel on the way.
    Now only w8ing 4 it...
     
  5. Danishblunt

    Danishblunt Guest

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    You could do the same.
     
  6. kothletino

    kothletino Notebook Consultant

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    A packet with fans arrived to me so I decided to do something with it.
    The original plan was to replace the rotors and motors in both fans, unfortunately during the exchange one of the rotors mounting broke(brake?)...
    Only one fan left me and I decided to go a little different way. The fan housing from p870 has been modified, the air outlet has been shortened by about 2 millimeters to fit in original place.
    Unfortunately, I do not have enough time to perform a real comparison of temperature results in games using the original fan and the one from p870(for now).
    At the moment I tested only GTA5 where the card reaches 73 degrees (2260rpm). This is not an extraordinary result if we talk about temperature because with the original fan the temperature reached 75 degrees (I did not pay attention to rpm here).
    I will soon do more tests with temperatures(with rpms) in games.
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  7. Danishblunt

    Danishblunt Guest

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    Using the copper RAM heatsinks is a terrible idea.
     
  8. kothletino

    kothletino Notebook Consultant

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    Not if you use notepal u3 plus. Originally heatsink was used for cooling ov/oc 8970m.
    I did not dismantle them because they are glued and I do not want to damage the heatsink, the heatpipe mount is not as strong as the one in p370SM(gpu1/master).
    As soon as the new package comes, I will return to the modification of the CPU fan.
     
    Last edited: Jan 21, 2019
  9. Danishblunt

    Danishblunt Guest

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    Even if you use notepal.
    I tested this setup and all it does is delay the rising temps but causes extremely bad problems with cooling down as well, also makes an oven out of your notebook.
     
  10. Khenglish

    Khenglish Notebook Deity

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    How large were your temp improvements? I see you are at 59C at 100W but what were you at before? Are you forcing the fan to max speed? I am skeptical that you saw much improvement because that fan blade is built to spin clockwise, while the fan shroud is built for a counter-clockwise rotating fan, and idk which way your motor will spin it.

    Inconsistencies with fan blade, shroud, and heatpipe/radiator design are what have prevented me from also doing my own fan blade for my GPU. The GPU radiator is built for a counter-clockwise fan due to the heat pipes coming in from the left, so you want more air flow at the start of the pipes, not the end. I do not know how much this matters though.
     
    kothletino likes this.
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