Hi,
I was looking here:
http://forum.mikrotik.com/t/crs328-24p-4s-rm-installation-of-fan3-and-fan4/131326/1
I noticed that Paul K Moore said
Paul has mentioned they’re quiet too, but I’m not sure exactly how quiet? I have silent equipment atm, and I wouldn’t want to hear any noise more than “ambient” noise that you normally get in a bedroom. Would it void warranty to replace the fans too?
Not as silent as you would want.
Definitely not for bedroom.
Not even with those Noctuas?
If You are looking for silent device “not above background level”, no. When someone wants this level of silence, usually even a 12cm computer fun is considered “too loud”.
I have one of these, at work. It doesn’t make an ear splitting racket - it is quite silent, in fact. But when I put it on the bench, I can clearly hear its fans - even when 3 or 4 meters away.
It is silent enough to happily work with one in the room, 2 or 3 meters away - but no more than this.
Even with those Noctuas.
I use them (not the PWM version though) in CCR1009.
Only one running at a time.
Much better than the stock ones - the sound is much softer and not so high-pitched.
But at night you can clearly hear it even in the adjacent room if the door is open.