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How Loud Are Your Mac's Fans?

When they get hot, Macs turn on various internal fans to keep components cool. The noise can be annoying, but just how loud is it? If you have an iOS device with a built-in microphone, you can download one of many free sound meter apps (search on decibel in the App Store) and see if you're subjecting your ears to a truly unreasonable noise level.

 
 

Lord Kelvin

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Lord Kelvin deserves an apology; the term "degrees," we're told by numerous alert readers, is not used along with his name in describing the temperature of an object. [MHA]

 

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