There are two things to take into account. One is ambient noise, for example if I am running a fan on a hot day to cool me then I can’t hear that or my pc over that. Two, the individuals hearing which can vary from person to person.Has Dell done anything for the fan, like replace with quieter one or modified software etc?
If not, people who can hear the fan does that mean their screen has a problem and should be rma?
It's confusing how one person says they can hear it and another says they cannot makes me think of you can hear it it's broken?
Also people have found it the monitor actually has 2 fans even though the Gsync ultimate module only needs 1 fan as seen in other monitors - it likely means that even if this monitor did not use Gsync it should still have that 1 fan, 1 of the fans must be cooling off the panel to allow it to draw more power for higher brightness
The fan is not ideal, but no means an deal braker unless you have a silent pc/room.
What I don’t get is why it is on after the monitor has turned off. That is just bad design on Dell’s part imo. They could have used a better fan and only had it spin up when HDR is used or when cooling is needed.