Here is an iPhone 13 Pro Max recording of a Mac Studio Max to help Fenderborn out.
It is somewhat humorous to be seeking, or providing, an audio recording of something "silent".
Normally the fans on this example idle between 1325 and 1339 RPM. Never seen the Mac break 1350 RPM unless done manually. Unless I get very close to the machine, as in within a few inches, it is silent with a room noise floor of 28 db (in the best case). I never hear any whine no matter how hard I try. In the recording it can be heard whining on idle, the speed ramps up to max then back down to idle. On the return to idle the whine is greatest.
So while I can make a recording that makes my Mac whine and sound loud what matters is the sounds I can perceive when it is in use. It is perceptually, to me, "dead silent". Apple needs to do a rethink on their approach to cooling as they risk loosing their market of younger users and those with more sensitive hearing.
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