P75XDM2/P75XXTM cooling!

Discussion in 'Sager and Clevo' started by anassa, Jul 19, 2020.

  1. Meaker@Sager

    Meaker@Sager Company Representative

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    Looks like this right?

    https://www.aliexpress.com/i/4000584804041.html
     
  2. yrekabakery

    yrekabakery Notebook Virtuoso

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  3. Meaker@Sager

    Meaker@Sager Company Representative

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    Lol that one may be better if you can fit it then.
     
  4. yrekabakery

    yrekabakery Notebook Virtuoso

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    And I’m hoping I can use it with a Clevo 3080M next year as well. Cyberpunk 2077 has given my 1080 a rude awakening.
     
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  5. joluke

    joluke Notebook Deity

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    Badly optimized game. Don't blame the hardware. The game is badly optimized af
     
  6. yrekabakery

    yrekabakery Notebook Virtuoso

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    No I don’t think it’s that. It’s far and away the best looking game ever made IMO, basically the new Crysis. A true next-gen game. Even at medium-high settings, with FidelityFX CAS dynamic resolution scaling set between 83% (900p) and 100% (1080p) for a mostly stable 60 FPS, it’s more detailed than any other game I’ve played at ultra.

    And maxed out with ray tracing, it simply looks phenomenal. Watching this video at 4K 60 FPS makes me want to upgrade so badly lol.

     
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  7. joluke

    joluke Notebook Deity

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    Yeah but my wallet is crying
     
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  8. Meaker@Sager

    Meaker@Sager Company Representative

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    That's what the game is doing to your GPU :p
     
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  9. anassa

    anassa Notebook Consultant

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    Looks like other than - the top RAM cover/cooling plate / area for top screw - the 1080 and RTX cooling pipe setup is exactly the same.

    BTW - I wasn't even sure if the 1080 was officially supported on the P750? Or it wasn't initially before some boutique companies sold it that way because they could? I forgot what it was.


    The GPU has dedicated 3 heatpipes and the CPU dedicated 3 heatpipes if you look again - there is an extra heatpipe that is not an extension of any of the three from each side that connects both sides.

    That makes me wonder how it compares to the P775TM1 that I am using then. Since on the P775TM1 both also have three heatpipes, but are just separate. TheP775TM1 still seems to have a larger surface area for the copper fins so it should still cool better?

    What settings are you using? What frequency for the GPU and voltage are you running?

    I currently have my:
    - 8086k @4.7ish undervolted all core
    - 1080 @ 1833Mhz ~ish at .975v
    (Very stable - no crashes with playing for hours)

    Running Cyberpunk 2077 at a mostly medium settings 1080p native - no dynamic resolution and I am getting around mid 40s to 70s FPS depending on what is happening. It looks pretty amazing even on medium settings and the G-sync panel helps.

    The GPU has a heavy load though and if I don't do FN+1 for full fans the 1080 will get up to 90C - with fans on full blast it is around 60~70C with ambient temps in around 15C - it is cooler outside now, being winter and all, so that really helps.

    I highly doubt the 3080 will work with our thermal limitations considering the 1080 is already pushing the limit of thermal capability of the P750 - and I don't know what else we can do to increase that thermal limit.
     
  10. yrekabakery

    yrekabakery Notebook Virtuoso

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    You are correct. The P750 GTX 1080 and RTX heatsinks have the same heatpipe configuration. I got it mixed up with the P775, which on its RTX heatsink has a shared 3rd heatpipe that runs to the GPU fin stack.

    The GTX 1080 wasn’t officially supported on the P750 before the -TM Coffee Lake generation. Technically it could work, but it would have thermal throttled to no tomorrow on the 2-pipe heatsink in the P750DM2. Been there, done that lol.

    The P775 has more fin area than the P750, so I would expect it to cool slightly better as you said.

    With Digital Foundry optimized settings, I get an average of just over 60 FPS at 1080p with a +170/+400 OC on the GTX 1080. It drops to the low 50's when driving, and over 70 indoors. Temps sit at around 83C on auto fans, or 78C with max fans. My i7-8086K is running at 4.7GHz core/4GHz cache with a -115mV undervolt on core/cache. RAM is 3100MHz CL15 with custom timings. Ambient temp is 18C.

    If I undervolt the GPU to 1873MHz @ .913V, it's cool and quiet, holding around 74C on auto fans. Performance is a few frames lower.

    Well, mobile is definitely not getting the desktop GA102-based 3080 chip. It's most likely the mobile 3070/3080 will be GA104-based, which should be doable inside a thermally optimized P750 unit at a TDP of up to 200W, given that it can handle our 190W 1080, which is a smaller die too (higher heat density).
     
    Last edited: Dec 20, 2020
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