Level 1

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Intermittent high fan RPM on Mac mini M4Pro

I received Mac mini with M4Pro chip today. I use iStat to monitor temperature and fan RPM. I found that the fan stopped for a very short time and then immediately ran at high RPM and then returned to 1000 RPM. The whole cycle happened in less than 1 second. This regularly happened around 5-10 minutes. I was not doing anything and CPU/GPU temperature were 40C and 30C. Is this an intended behavior? Or is there something wrong with my Mac mini?

[Re-Titled by Moderator]

Posted on Dec 21, 2024 8:51 AM

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den.thed

Level 10

90,898 points

Posted on Dec 21, 2024 9:56 AM

Check you Activity Monitor for spiking CPU, Disk and Network Activity.

Keep in mind that macOS has a lot of background work to do after a setup and migration, which could easily be causing the Fan to occasionally ramp up and down.

If the Fan doesn't settle down after that initial setup activity has passed..? Then recheck you Activity Monitor.

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24 replies

SHTsai Author

Level 1

16 points

Dec 22, 2024 2:50 AM in response to hcsitas

Those are all options I have in the Energy Settings

hcsitas

Level 6

13,964 points

Dec 22, 2024 2:54 AM in response to SHTsai

You’re snapping Energy mode, snap Energy settings please.

hcsitas

Level 6

13,964 points

Dec 22, 2024 4:37 AM in response to SHTsai

So Wake is disabled, correct?

SHTsai Author

Level 1

16 points

Dec 22, 2024 4:42 AM in response to hcsitas

Yes, wake is disabled

SHTsai Author

Level 1

16 points

Dec 22, 2024 5:04 AM in response to den.thed

Thank you for the suggestions. I will return it tomorrow and buy a new one to see if the issue is still existing

SHTsai Author

Level 1

16 points

Dec 22, 2024 5:07 AM in response to hcsitas

Thank you! I will return it and get a new one to see if the issue is still. This issue did bother me because the fan noise is quite annoying when it is at high RPM and it regularly happened

hcsitas

Level 6

13,964 points

Dec 22, 2024 5:10 AM in response to SHTsai

Good decision! All the best.

den.thed

Level 10

90,898 points

Dec 23, 2024 7:40 AM in response to SHTsai

👍 I'm glad to hear that.

SHTsai Author

Level 1

16 points

Dec 21, 2024 10:49 PM in response to hcsitas

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Intermittent high fan RPM on Mac mini M4Pro