“Auto” keeps the default behavior, but opening up “Custom” allows you to set a specific RPM value, or set a target temperature. When it starts, you’ll see a list of all your fans and the option to set custom controls. Get started by downloading the Macs Fan Control app and moving it to the Applications folder. This section will talk about how you can fix loud fan noise on Mac. Previous steps in the article help identify why Mac fan is loud. The step is not valid for M1 Mac as it features a passive cooling system. It’s also possible that running fans at max speed for extended periods could lead to damage, so try not to torture your laptop. Here is how you can reset SMC on Intel-based Macs. With either option, you should monitor the temperatures of your CPU and other components and make sure you’re not causing damage to your system. Keep in mind that this will make your system run a lot hotter, and could lead to system instability if you let it go too far. On the other hand, if you hate fan noise, you can manually turn them down. I like to imagine that they spent a fair amount of time figuring out what temperatures should cause fans to spin up to keep everything working smoothly, and Apple engineers know more about that than I do. SMC should be managing fan speed based on temperature sensors in your Mac. This makes a lot of noise, which is why the auto-control tries to slow it down. You should reset SMC, and if it's an older Mac have an Apple Certified Mac Tech clean your fans before using software that modifies how your Mac's cooling works.

Usually, this kicks in before the temperature gets too high, but you can manually push your CPU farther by turning the fan speed up farther than Apple usually allows.

Your Mac throttles your CPU when it gets too hot, slowing it down significantly until the temperature gets under control.

Smc fan control mac review