Low Power Mode in Apple's macOS software also reduces fan noise on specific Mac models for tasks that require a quieter environment.
Low Power Mode reduces fan noise on these Macs

Low Power Mode in Apple's macOS software also reduces fan noise on specific Mac models for tasks that require a quieter environment.
Learn how to play soothing sounds of the nature or relaxing white noise right on your iPhone, iPad, or Mac without downloading any apps.
Learn how to minimize unwanted noises like wind or rain in your videos by using the "Reduce Background Noise" feature in iMovie to enhance the audio quality of your video projects.
Apple introduced the Noise app with watchOS 6 this year. The feature – available on Apple Watch Series 4 and later - measures ambient noise, and is aimed at helping Apple Watch wearers to protect their hearing. Now People magazine has a story about how the Noise app is helping an autistic man to manage an issue that could cause social discomfort.
Learn how to switch between Noise Cancellation and Transparency modes on your AirPods to enhance both focus and awareness in different settings.
Learn how to use the decibel meter feature on your Apple Watch for monitoring noise levels around you and protecting your hearing health.
Apple's ever expanding health scope in watchOS includes a new Noise app for Apple Watch aimed at protecting one of your most precious assets: your hearing.