I have an EVGA NVIDIA GeForce RTX 3060 XC, and it seems like once you bump up against certain temp (I don't know exactly how high), the fans never, ever shut off until the computer is completely powered down. Even with my GPU at < 30°C, fans are going full tilt. It is very loud and annoying.  Is there anything to be done for this?  I have the latest driver through GeForce Experience, at least that's what it reports.

AHowes
Are you using evga px1 to control the card fans?

No; should I be?    I'm totally ignorant of such, since I've never needed software other than NVIDIA drivers for my cards before.

Xynix

AHowes
Are you using evga px1 to control the card fans?

No; should I be?    I'm totally ignorant of such, since I've never needed software other than NVIDIA drivers for my cards before.

Well.there ya go! Yes download evga's software called Precision X1 https://www.evga.com/precisionx1/

When if firsts launches it may want to update the cards firmware.. let it do it.

Now hopefully the fans react properly.. though I'd setup the fan profile to what you want other then auto.

Xynix

AHowes

Xynix

AHowes
Are you using evga px1 to control the card fans?

No; should I be?    I'm totally ignorant of such, since I've never needed software other than NVIDIA drivers for my cards before.

Well.there ya go! Yes download evga's software called Precision X1

When if firsts launches it may want to update the cards firmware.. let it do it.

Now hopefully the fans react properly.. though I'd setup the fan profile to what you want other then auto.

I'm not at home right now to try it, but I will absolutely give this a whirl as soon as I can.  Thanks for filling me in.  :)
 
Also, is there a chance I'd need to re-apply thermal paste on the GPU?  I think the card is only a year(ish) old.

Should be fine.. in px1 you'll be able to see the temps as well.

Default fans maybe 0 rpm till a certain temp like 40c.

I like to create a fan curve for 50% at idle temps to help keep the temps down on the card.. so it's not that hot when you start to game.

Then ramp the fans up to 70-80% or whatever you can bare from 45-50c on to help keep it from hitting 80c while gaming.

Theirs a whole px1 forum on here you can check for more info.

Xynix
So call me crazy, but doesn't it seem like something is wrong here?
....I can't link the image.
 
But one of my GPU fans shows 0 RPM when manually set to 100% speed.

Ya gota hit apply after setting the fans.. just encase.

Fans are all set to sync? Usually theirs multipal fan curves to set.. 1 curve for ea. But you can sync the fans to gpu temp.

For the pic tey to put a space in the link so it will show and then we can fix the link to see it.. you just need a higher post count before you can post links.

How would I switch wires?  Would I need to disassemble the GPU?  There are no wires exposed.

There might be, lol...  I can't physically see the card at the moment, so it's very possible I just don't know what the honk I'm talking about.  I will check once I get home.
 
Thank you so much for all your help, I really appreciate you taking the time to respond.

just like AHowes mentions,
dont forget to push the button "APPLY" on the screen
in everytime making new adjustments.

there are some options to try on main setting and side sliding curve setting 
which is not really visible until bringing the mouse pointer
to each center side of clicking arrow button,
 
hope that it can work out for you.

Ok......
 
So, egg on face, I'm an idiot and all that, both fans are spinning, that's what I get for trying to diagnose this remotely. Glad I said I was only 99% sure lol......
 
The problem, it would seem, is that Fan #1, once activated, doesn't ever SLOW DOWN (and also it shows no RPM reading on PX1) until cold- or re-boot.  From full throttle, a reboot gets it about half or 2/3's of the way slowed down, but once Windows loads, no further drops, only increase. Cold boot turns it off entirely, until it ramps up again, and then stays there "forever."
 
If I cold boot (GPU fans off) and bump the GPU fans manually using PX1, Fan #2 can be turned back off again as you'd expect.  Fan #1 can't be.  It also (like I mentioned) shows no RPM, whereas Fan #2 does.

Xynix
Update: I finally found the VBIOS update, and I did that, but Fan #1 still doesn't interact properly. Another thing I just tried, setting it at 50%... it jumps straight past 50% to full power and never looks back.

Vbios or firmware in px1??

My next act would be to find the official bios for it and flash it.. thinking the bios is tsking over and controlling the fan or is messed up.

Kinda like it's acting like a card with a single gpu fan.

Where do you get this card? A gift?? Was it used prior by someone else who may of flashed the card to a different bios??

AHowes

Xynix
Update: I finally found the VBIOS update, and I did that, but Fan #1 still doesn't interact properly. Another thing I just tried, setting it at 50%... it jumps straight past 50% to full power and never looks back.

Vbios or firmware in px1??

My next act would be to find the official bios for it and flash it.. thinking the bios is tsking over and controlling the fan or is messed up.

Kinda like it's acting like a card with a single gpu fan.

Where do you get this card? A gift?? Was it used prior by someone else who may of flashed the card to a different bios??

I updated VBIOS thru PX1.  The card was a gift from a family member back in Mar-Apr of '21, and as far as I know it was bought new.  I'm unfortunately not able to reach them, as it stands.