Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Superrenz

macrumors 6502
Original poster
Dec 2, 2018
412
198
Wiesbaden, Germany
Need your expertise: My MBP M4 Pro reaches a CPU temp of 108C during encoding to mp4 with handbrake. Is this still safe or should I be worried? Thx for your help.
 
The fans are at around 2.5k and go up to 4K rpm ‚til temp drops to around 81C. Then the fans lower to 2.5k temp goes up to 108 and the game starts all over again. Is this ok? I have to do some pretty serious encoding in the coming weeks and don’t want to harm the hardware.
 
  • Like
Reactions: schnaps
It’s doing what it’s supposed to be doing.

Side note: if you have the option of using a format the Media Encoders use you’ll likely see a significant reduction in how “hard” the machine is working. What are you converting to in Handbrake?
 
It’s doing what it’s supposed to be doing.

Side note: if you have the option of using a format the Media Encoders use you’ll likely see a significant reduction in how “hard” the machine is working. What are you converting to in Handbrake?
MP4… any suggestions? Will 108C damage the hardware? I thought the MBP is made for tasks like this.
 
I would install an app to control the fans manually and run it under manual control while encoding.

I have used TG Pro on the old 2013 Mac Pro.
 
  • Like
Reactions: Superrenz
I would install an app to control the fans manually and run it under manual control while encoding.

I have used TG Pro on the old 2013 Mac Pro.

I tested this one because it is in Setapp:

https://stclairsoft.com/AppTamer/index.html

You can set limits for every single app and process and it warns you if something is causing a too high CPU load in a too long timeframe, you can change those limits. Also you can tell an app only to use low efficiency cores etc.

Screen Shot 2024-12-17 at 13.21.45.png

Screen Shot 2024-12-17 at 13.22.29.png
 
Last edited:
it warns you if something is causing a too high CPU load in a too long timeframe

According to whom? The only people in a position to determine what is too high or too long work for Apple—the same people that designed the processor, the computer, and its cooling systems, to operate under a variety of workloads and to not enter race states where temperatures or workload might be too high or for too long.
 
  • Like
Reactions: kitKAC and montuori
Such overheating is harmful.

When the crystal temperature rises above 85 degrees, multi-level metal connections, contact transitions and inter-level dielectrics are subject to thermal expansion of layers.

With constant overheating, if it works for a year, consider it excellent.
 
Such overheating is harmful.

When the crystal temperature rises above 85 degrees, multi-level metal connections, contact transitions and inter-level dielectrics are subject to thermal expansion of layers.

With constant overheating, if it works for a year, consider it excellent.
If this is true…80% of hard working MBP would be junk within a year. Are you sure?
 
  • Love
Reactions: throAU
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.