Avolate
RMA's always happen. I had to RMA my 1080 because they didnt apply thermal pads correctly on a bunch of the first cards.
Ha - I had the same issue and had to RMA my 1080 FTW, which is what I replaced with this 3080 XC3 Ultra.
I recorded a video of mine - this is the third fan by the power connectors. At the end I enabled a fan profile to shut it off, you can hear the noise stops before it totally spins down - and can hear the other 2 fans speed up.
The vibration sound in the first half I believe is coming from my CPU cooler.
https://youtu.be/kMtPsKnAvCc