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RTX 3090 FTW Ultra - Issue with reported fan 1 speed

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Perpixel
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2021/07/28 12:50:35 (permalink)
I did some investigating on the reported fan 1 speed by my 0.1 refurbished RTX 3090. Not saying this is causing the dead cards, but would be nice to get an explanation. In short, my card keep going slow to real fast in some scenarios. In GPUZ you can see the reported RPM hit 200000 rpm. Of course, the fan is not going that fast, but it really does ramp up and down non-stop (freakin annoying too). I've been trying to check what cause the problematic reporting of the fan and had the idea to put a Y cable from the tach of my fan to a free motherboard tach input. Surprisingly, doing kinda fix the reporting on the GPU monitor and this is what you can see in this video while I plug and unplug that extra cable to my motherboard.... Halo MCC does this too.
 
https://www.youtube.com/watch?v=7yzLyNMOjdU
 
 
 
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    MartinUK
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    Re: RTX 3090 FTW Ultra - Issue with reported fan 1 speed 2021/07/29 03:31:59 (permalink)
    Do you have the latest fan controller/MCU firmware installed? (this is different from the VBIOS).
     
    To check, just install the latest version of Precision X1 and run it, at startup if your MCU firmware is out of date it will prompt you to update it.
    EVGA - Software - EVGA Precision X1ᐪᔿ
     
    I don't know if it will make any difference, but some of the patch notes at the bottom specifically mention changes to fan control and the ICX sensors etc so there is a decent chance it will change something.
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    Perpixel
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    Re: RTX 3090 FTW Ultra - Issue with reported fan 1 speed 2021/07/29 06:48:02 (permalink)
    I'm on the latest X1 and yes the firmware is updated. Maybe it's just me seeing this...
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    Perpixel
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    Re: RTX 3090 FTW Ultra - Issue with reported fan 1 speed 2021/07/29 10:05:25 (permalink)
    New video with the actual sound of the fans recorded. https://youtu.be/x-nXxGBHRvA
     
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    MartinUK
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    Re: RTX 3090 FTW Ultra - Issue with reported fan 1 speed 2021/07/29 14:56:33 (permalink)
    It is a kinda known issue, but I don't believe anyone knows for sure why it happens. There was some speculation (by igorslab.de) that this also had something to do with cards dying while playing NewWorld, but there is no proof the fan rpm thing and the bricked cards are actually related, and might be two seperate issues.
     
    You may want to check out these threads:
    regarding the RTX3080/3090 NewWorld drama - EVGA Forums
    Strange RTX 3090 FTW3 Fan Behaviour - EVGA Forums
     
    Best of luck
    post edited by MartinUK - 2021/07/29 14:58:06
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    EVGA_JacobF
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    Re: RTX 3090 FTW Ultra - Issue with reported fan 1 speed 2021/08/06 18:10:13 (permalink)
    Perpixel
    New video with the actual sound of the fans recorded. https://youtu.be/x-nXxGBHRvA
     




    Your card looks like it has the HYBRID BIOS flashed to it due to only reporting 2 fans and it should be 3, or some other MCU issue. We will be reaching out to you.


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    Perpixel
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    Re: RTX 3090 FTW Ultra - Issue with reported fan 1 speed 2021/08/07 03:29:27 (permalink)
    It does have the hybrid kit on it and flashed hybrid bios. The card did this prior to upgrading the cooler too.
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