Dell XPS 15 9570 benchmarks + temps

Discussion in 'Dell XPS and Studio XPS' started by custom90gt, Jun 7, 2018.

  1. pressing

    pressing Notebook Deity

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    I can answer this partly (I think)...

    On the 9550, there were 4 vram chips next to the GPU. Each was covered with a fluffy thermal pad. Each fluffy pad transferred heat to the heatsink. Unfortunately all the 9550 heatsinks were bent so that 1 or 2 vram chips had no contact with the heatsink.

    You could diagnois by looking for good thermal pad contact and seeing indents about the full size of each vram chip.

    Fix was typically to replace problematic thermal pads with slightly thicker thermal pads. Make sure to use only low w/mk pads that are fluffy. If you use thermal pads that are too dense or too thick, then the heatsink will not clap evenly on the GPU and you will have significant GPU thermal issues. I suppose you could bend the heatsink but it is super delicate and getting this bent the correct amount and flat would be a challenge. . .

    The 9560 heatsink was revised and the vram contact was fine so not an issue

    With the 9570, @Eason noted that his laptop had an issue with vram thermal pads, which is similar to what I described with the 9550.

    EDIT - not sure if this is an issue on many 9570s of if Eason just got a a defective heatsink so I would not mod unless you see a problem.
     
  2. custom90gt

    custom90gt Doc Mod Super Moderator

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    Posted my responses in red. Sorry typing from Mexico on my phone.
     
    Last edited: Jun 19, 2018
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  3. custom90gt

    custom90gt Doc Mod Super Moderator

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    @pressing my heatsink was messed up as I posted. That's why I used K5 pro. My guess is Dell still has issues.
     
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  4. abujafar

    abujafar Notebook Evangelist

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    Do you think 1.5mm could be enough for the RAM? It seems a more common format (I basically have to buy everything).

    Thanks
     
  5. custom90gt

    custom90gt Doc Mod Super Moderator

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    I don't think would work sadly.
     
  6. abujafar

    abujafar Notebook Evangelist

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    Thanks. Is a 5mm padding stack enough from the VRMs to reach the backplate or should I shoot for 5.5mm or 6mm?
     
    Last edited: Jun 19, 2018
  7. custom90gt

    custom90gt Doc Mod Super Moderator

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    Wish I could measure the heatsinks for you but I thought @Eason ran thermal pad from the vrm to the case. Maybe he can help.
     
  8. abujafar

    abujafar Notebook Evangelist

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    In his 9560 guide, he had 3x1.5 pads that makes a 4.5mm stack.
     
  9. abujafar

    abujafar Notebook Evangelist

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    If 85c is still a safe temp for RAM modules, why the hell Dell put a threshold at 63c?
     
  10. cletus_cassidy

    cletus_cassidy Notebook Guru

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    This (1.5*3 stack) was the route I was going to go too. Hoping it works for you and please report back.
     
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