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Hot!3090 FTW3 with Optimus waterblock, not happy with temps

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MIab84
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2022/01/14 23:33:36 (permalink)
Hey guys,

So I installed an Optimus waterblock and XL backplate, used the full sheet of Fujipoly for the back plate but for the front I used Odyssey pads, correct size (.5mm). Thermal grizzly for paste on core.

During full load, my core gets to about 40c but my memory is at 90c!

My system is 3 360mm rads, and I have a 5950X at stock speeds on the loop as well.

What gives? I thought It would be way better temps
post edited by MIab84 - 2022/01/16 15:53:27
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20 Replies Related Threads

    mauxie
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/14 23:38:26 (permalink)
    My 3080ti with the optimus block does 60c max on the mem so something is up with your mount :)
    #2
    MIab84
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 15:43:23 (permalink)
    I already inspected the card and it seems like everything is making good contact.

    Maybe I should just take it apart and re-do the pads front and back? Or just re-mounting is good enough?
    #3
    telehog
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 15:52:32 (permalink)
    I have a Rtx 3090 FTW3 ultra with the OP block my memory junction temp run under full load around 74c. Used KP paste and all stock pads that came with . Kingpin HC block under load runs 20 to 22 c hotter. I think re do of block mounting should help.
    #4
    MIab84
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 15:54:01 (permalink)
    Well that sucks!

    I was hoping for those kind of temps. I would even be happy with 80 mem
    #5
    MIab84
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 15:58:34 (permalink)
    telehog
    I have a Rtx 3090 FTW3 ultra with the OP block my memory junction temp run under full load around 74c. Used KP paste and all stock pads that came with . Kingpin HC block under load runs 20 to 22 c hotter. I think re do of block mounting should help.


    Did you use the thermal pads that came with the block or something else?
    #6
    telehog
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 15:59:56 (permalink)
    Op block way better then HC block . Must be something wrong with mounting and pads.   I wanted a OP block for Kingpin but got tired of waiting and cancel order.
    #7
    telehog
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 16:00:43 (permalink)
    MIab84
    telehog
    I have a Rtx 3090 FTW3 ultra with the OP block my memory junction temp run under full load around 74c. Used KP paste and all stock pads that came with . Kingpin HC block under load runs 20 to 22 c hotter. I think re do of block mounting should help.


    Did you use the thermal pads that came with the block or something else?

    I used all stock pads !
    #8
    telehog
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 16:03:36 (permalink)
    I do have 2 x480 rads and 2 x360 rads. But that should mot make that much difference  over your rad set up.
     
    #9
    jaredbyoung
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 18:14:19 (permalink)
    MIab84
    Hey guys,

    So I installed an Optimus waterblock and XL backplate, used the full sheet of Fujipoly for the back plate but for the front I used Odyssey pads, correct size (.5mm). Thermal grizzly for paste on core.

    During full load, my core gets to about 40c but my memory is at 90c!

    My system is 3 360mm rads, and I have a 5950X at stock speeds on the loop as well.

    What gives? I thought It would be way better temps

    When you say "full load" are you talking about gaming? Benchmarks? ...Or mining? Because if you're talking about mining and you're running a big mem overclock then you're doing just fine. Anything else, well, yeah, redo your mount. 
    #10
    the_Scarlet_one
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/16 18:30:14 (permalink)
    Are you reading the memory temps, or are you reading ICX mem temps?

    If you are looking at Precision Mem temps in the ICX menu, try using GPU-Z and reference the memory temps in there.



    <- Main PC Specs
     
    <- mATX build
    #11
    Gotspeed_2000
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/17 01:42:04 (permalink)
    The temps sound very wrong.  I have the Optimus block on my 3090 FTW3 Ultra and the GPU VRAM during multiple runs on Port Royal/Time Spy is no where near your temps even with an oc.  
     
    Why did you need to change the pads and did you use the same thermal pads on the rear that come with the block?  Or did you get them from another source?  
     
     
     
     

    Phanteks Enthoo Pro 2
    I9 12900K with EK Velocity 2 Block
    3090 Kingpin with Optimus Block
    Asus Hero Z690 Mobo
    64GB DDR5 RAM Trident 6000Mhz 
    1TB Nvme primary /2TB Nvme secondary/1tb SSD drive
    EVGA 1200 Watt Supernova PSU
    14 Lian Li AL120 fans
    1 * 480mm medium thickness rad, 1 * 360mm Medium thickness rad, 2 * 360mm thin rads with EK Pump/res combo.  Custom hard tube loop.  
    Samsung G7 32" Monitor
    EVGA Z20 Keyboard
    Glorious Model O
    #12
    MIab84
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 15:01:27 (permalink)
    jaredbyoung
    MIab84
    Hey guys,

    So I installed an Optimus waterblock and XL backplate, used the full sheet of Fujipoly for the back plate but for the front I used Odyssey pads, correct size (.5mm). Thermal grizzly for paste on core.

    During full load, my core gets to about 40c but my memory is at 90c!

    My system is 3 360mm rads, and I have a 5950X at stock speeds on the loop as well.

    What gives? I thought It would be way better temps

    When you say "full load" are you talking about gaming? Benchmarks? ...Or mining? Because if you're talking about mining and you're running a big mem overclock then you're doing just fine. Anything else, well, yeah, redo your mount. 


    I was using Furmark to stress the GPU and see how hot it would get.
    #13
    MIab84
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 15:03:33 (permalink)
    the_Scarlet_one
    Are you reading the memory temps, or are you reading ICX mem temps?

    If you are looking at Precision Mem temps in the ICX menu, try using GPU-Z and reference the memory temps in there.


    I'm reading mem temps from HWinfo.
    #14
    MIab84
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 15:06:25 (permalink)
    Gotspeed_2000
    The temps sound very wrong.  I have the Optimus block on my 3090 FTW3 Ultra and the GPU VRAM during multiple runs on Port Royal/Time Spy is no where near your temps even with an oc.  
     
    Why did you need to change the pads and did you use the same thermal pads on the rear that come with the block?  Or did you get them from another source?  
     
     
     
     



    So I got Kritical pads because I heard they had the highest heat transfer and was recommended by other people.

    I now bought a brand new sheet of Fujipoly and brand new pads from Optimus, re-did everything and now I'm getting 34c core, 80-82c mem.

    I'm beginning to think I might now be tightening the screws as much as I'm supposed to. I'm just afraid to crack the core or card. I tightened them "tight" I would say, but not super tight or putting a bunch of torque on them.

    Am I supposed to go as far as the screw would go? How did you guys tighten yours??
    #15
    ss.dna
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 15:16:05 (permalink)
    Will EVGA RMA this card??
    #16
    kraade
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 16:42:57 (permalink)
    Something has got to be up with the mount, My stock KPE has never hit 90 mem,  du you mine? 


    #17
    rzelek506
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 22:45:16 (permalink)
    For reference, I also have a 3090 FTW3 with the Optimus block, so I just ran the Furmark stress test now for ~20min and with no OC. How long did you let your furmark stress test run for?
    During my run, the VRAM junction temp hit a max temp of 76C and below is a hwinfo snippet with some more details.
    Also, my case temp went from 27C-29C and the fans were going at ~60% speed for this run.
     

     
    Since the hot VRAM on the back of the card is passively cooled with the Optimus backplate, I wouldn't expect your radiators and loop to completely determine the VRAM temps.
    Instead, I would expect your case temp and airflow on the rear side of the card to also impact the VRAM temp.
     
    And, I would not recommend tightening the screws by too much.
    The way you described the retightening sounds about right, and you shouldn't need to exert yourself doing so because the PCB can bend if you overtighten.
    post edited by rzelek506 - 2022/01/26 22:49:45
    #18
    ss.dna
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 23:10:39 (permalink)
    I'm not mining on the card.

    I let the rest run for about an hour.

    I know the back is passively cooled, and I have my fans set at very low RPMs, 850-950rpms, because the goal was to have a silent build.

    I'm kinda avoiding re-doint it because I feel like it's just going to be the same at this point.

    If my mem temps were high 70s, I would be happy and call it a day.
    #19
    rzelek506
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/26 23:49:12 (permalink)
    If it really bugs you, you could get an EKWB block, which has an active backplate and would cool the VRAM better but at a cost of increased GPU temps.
     
    If you want the best of both worlds, Optimus may also create an active backplate for their FTW3 blocks, however, they are still stuck working on Kingpin blocks people ordered 6+ months ago, so who knows when their FTW3 active block would be ready (if they decide to create one).
    post edited by rzelek506 - 2022/01/27 00:23:44
    #20
    zippytek
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    Re: 3090 FTW3 with Optimus waterblock, not happy with temps 2022/01/27 05:55:24 (permalink)
    not familiar w those pads, but my guess is they don't have the same density vs the included set. use what came with the optimus block. i never had temps that high with or without chilled water. sounds like you know what the problem is. you pay a premium for optimus because their blocks are tested and proven. not sure why you'd think changing pads will improve on that. good luck
    #21
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