Hardware dilemma... Fix, TrueNAS server, or Dell server

My gaming rig (two 120mm, and one 200mm fans) makes more sound than the Mini R. I’m not the right guy to ask, I’m a old guy thats a little hard of hearing, lol. If you remove your drives do you still hear the sound?
I don’t know if the fan speeds can be adjusted…

Yes, I can hear it. It’s actually in other room in a basement. With drives as well. It’s not the sound, but repeating annoying whine. I already checked in IPMI and they run around 1700-1900RPM in optimal mode.

It this point I would open a support ticket and see what they say.