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Watercooled 3080/3090 VRAM temps

Discussion in 'Watercooling' started by MikeTimbers, 17 Aug 2021.

  1. MikeTimbers

    Sgarrista

    Joined: 18 Oct 2002

    Posts: 7,880

    Location: New Eltham, London

    Can those with watercooled 3080/3090 cards can you provide your VRAM and GPU temperatures when under load?

    Trying to see what delta you have.

    For context I have an Inno3d 3080 with a factory fitted Alphacool Eisblock. I don't game with it. It was bought on a whim and at a significantly below MSRP. In a loop with a 7700K and a 360mmx60mm thick rad the VRAM is very hot and I'm thinking about replacing the Eisblock.
     
  2. Wingz

    Mobster

    Joined: 29 Apr 2003

    Posts: 2,766

    Location: Cardiff

    3080 FE with Bykski waterblock

    Ram

    55C gaming
    76C mining

    Gpu
    40-45C
     
  3. Hakanese

    Wise Guy

    Joined: 20 Jun 2013

    Posts: 1,830

    3090 Gamerock.
    Ram and Junction were getting into 90s at stock, Gpu was around the mid 60s. I then changed pads on back dropped to low 80s.
    Watercooled and with Mp5 works Junction temp/Hotspot temps have barely passed 60C under serious prolonged load, and my gpu temp stays at 44C. All at 370W load.

    The backplate cooling for me makes the most difference to my Junction/Memory temps, with these cards it seems to me that watercooling only one side isn't really doing the full job.
    Have you and old spare heatsink yoou could try out to cool the backplate Memory. 1mm thermal pad and bungee cord/zipties and see if that improves your temps
     
  4. Jay85

    Sgarrista

    Joined: 22 May 2010

    Posts: 7,725

    3090 Palit Gamingpro

    Heatkiller 5 block with backplate

    GPU on its own loop with external dual 360 55mm thick rads

    Gaming
    Ambient temp: 19-20c
    core temp: 44c
    vram temp: 66-68c
    Vram temp with heatsink backplate mod: 62c
     
  5. MikeTimbers

    Sgarrista

    Joined: 18 Oct 2002

    Posts: 7,880

    Location: New Eltham, London

    Thanks all, keep it coming please!
     
  6. Gavster

    Gangster

    Joined: 20 Dec 2020

    Posts: 271

    3080 Founders Edition
    EK Quantum Vector FE

    GPU memory junction 38c idle and 58c gaming
    GPU temp 30c idle and 58.6 gaming
     
  7. Chockymonster

    Gangster

    Joined: 2 Jun 2020

    Posts: 115

    3080 FE Founders Edition
    EK Quantum Vector FE
    Ambient temp 25

    GPU memory junction 38c idle 48 gaming
    GPU temp 32 idle and 42 gaming
     
  8. MikeTimbers

    Sgarrista

    Joined: 18 Oct 2002

    Posts: 7,880

    Location: New Eltham, London

    Wow, those FE numbers are really low!
     
  9. Gavster

    Gangster

    Joined: 20 Dec 2020

    Posts: 271

    Don`t forget that 3080 doesn`t have memory chips on the back like the 3090 which will help a lot.
     
  10. MikeTimbers

    Sgarrista

    Joined: 18 Oct 2002

    Posts: 7,880

    Location: New Eltham, London

    understood. My 3080RE though is a lot hotter than those 3080FE.

    It's all very confusing. I've seen block reviews that show relatively little difference between RE blocks (Techpowerup) and others (Kitguru) that showed a massive difference. Techpowerup showed VRAM on the Alphacool as 5C worse than the EK Vector while Kitguru showed 22C worse on Alphacool than Vector.

    So I don't know whether I've got a crap block and replacing it is worthwhile or an OK block and it isn't. The temps above show that my VRAM temps are still poor despite changing the pads.
     
  11. Gavster

    Gangster

    Joined: 20 Dec 2020

    Posts: 271

    Can you post up the thermal pad layout? I know the EK block uses way more thermal pads than Nvidia, if the Alphacool block uses the same pad layout as Nvidia then that might explain the temperature difference in the memory junction between the two.
     
  12. Radox-0

    Mobster

    Joined: 9 Mar 2015

    Posts: 4,184

    Location: Earth

    3090FE with EK block.

    When water temp is 35 - 38 degrees according to couple of inflow sensors, my GPU core is usually around 40 degrees - 47 degrees after couple of hours of play. More power demanding games pulling near 400w limit of FE card will be towards later end such as 4k Cybperunk RT. At same time with +1000 Mhz memory offset Memory temp reachs around mid 60's, so much hotter then core, but still more then fine.
     
  13. MikeTimbers

    Sgarrista

    Joined: 18 Oct 2002

    Posts: 7,880

    Location: New Eltham, London

    1mm pads across memory. The VRM has the same 1mm. I believe the problem is in the design of the block itself which has relatively little fluid flow over the VRAM areas but as I say I'm confused that one review says it's fine and another says it's not.

    https://www.kitguru.net/components/...-vs-corsair-vs-ekwb-rtx-3080-gpu-water-block/
    https://www.techpowerup.com/review/alphacool-eisblock-aurora-acryl-gpx-n-rtx-3080-3090-reference/
     
  14. therealdippy

    Gangster

    Joined: 10 Dec 2020

    Posts: 168

    This is interesting. Having read this thread I was surprised to see that my VRAM is around 75C at idle. But now I understand that this is expected with the 3090. I have the GBT Waterforce waterblock model which has a backplate which certainly does get hot to the touch. However under load the highest VRAM temperature I have seen is 85C with the GPU around 42C.
     
  15. Damien.

    Soldato

    Joined: 20 Nov 2006

    Posts: 6,779

    1hr of cyberpunk;

    [​IMG]
     
  16. MikeTimbers

    Sgarrista

    Joined: 18 Oct 2002

    Posts: 7,880

    Location: New Eltham, London

    @Damien. what block do you have on that please?
     
  17. Damien.

    Soldato

    Joined: 20 Nov 2006

    Posts: 6,779

    EK Quantum Vector FE block
     
  18. woppy101

    Soldato

    Joined: 14 Oct 2007

    Posts: 5,953

    Location: newcastle

    VRAM temp on my 3080 was between 68-70c after 33hrs of mining
    [​IMG]
    [​IMG]
     
  19. Grim5

    Sgarrista

    Joined: 6 Feb 2019

    Posts: 9,230

    3090 Strix with just front EK block and standard backplate

    72c while gaming
     
  20. TT158

    Gangster

    Joined: 15 May 2020

    Posts: 331

    Some testing I did a while back when I'd first installed it all in the O11D XL

    Port Royal loop:
    MP5WORKS BPC installed
    GPU 42-43, Memory Junction 58-60
    Fans 1500-1700rpm, water temp 31c

    This is a 3090 FE with Corsair block, using the pre installed pads.