For those of you with a 14inch M1 Max MBP and 5K UltraFine display, do the fans turn on with normal usage? Also, what temps do you get on average? I'm currently using a 16inch M1 Pro MBP with a 5K UltraFine display and temps average around 50 degrees C and the fans do not turn on. I have a 14inch M1 Max MBP coming in the mail one day but don't know which one to choose. Thanks in advance!
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14inch M1 Max MBP with 5k UltraFine display
- Thread starter MGLXP
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I only have a 4k display but do not hear any fans or feel any warm spots. What are you using to monitor the temps?
Just an additional data point, but running a 14inch M1 Max with the LG 5K Ultrafine leads to the fan coming on around 2500rpm (very barely audible - only audible putting your ear right up to the keyboard) once in a while. This is under normal/light use with some YouTube streaming. The fan mostly stays off. It seems like the chassis is not completely able to handle the M1 Max powering the 5k display completely fanless all the time. Meanwhile, the 16inch M1 Pro can handle the 5k fanless without any issue.
Been watching this thread for a while but could not confirm as my iStat Menus was not updated. I can now confirm that the fans stay off with one LG 5K display plugged in, not charging and in idle (except with some webpages, Outlook etc. open). My ambient temperature is around 26 deg C.
[Edit] Oops, the fans just came on. They run at below 2,500rpm though, which is hardly noticeable. I guess the fans may stay off if your ambient temperature is lower.
[Edit] Oops, the fans just came on. They run at below 2,500rpm though, which is hardly noticeable. I guess the fans may stay off if your ambient temperature is lower.
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That’s very interesting. My 16” M1 Max never ramps the fans up at any time connected to my 5K display. What temps do you see when the fan does ramp up? Mine sits in the low 40s-50s doing web browsing, movie watching etc.
My ambient is about 22C, mind.
The fans seem to ramp up when the CPU temp rises to 50C. Later in the evening I observed an episode where the CPU temp rose quickly and the fans ramped up at 65C to about 2,500rpm. That seems effective in keeping the CPU temp at about 60C with ambient temperature of around 24-25C.
I find that the fans shut off until about 60 to 65C, then it ramps up to 2500rpm, which brings down the temp to about 50C after which the fans shut off again. My ambient temp is around 20C.
Yeah that's way different on the 16". I didn't see fans ramp up till the 80s C, and then they shut off as soon as the system got into the 60s again. Even then, the fans were so quiet at ~1550rpm, you'd have to have your ear next to it to hear. I was keeping an eye in iStat Menus.
Under my everyday browser/video-watching use, my 16" M1 Max never, ever spins its fans up connected to the 5K display.
Yah totally agree. I decided to keep a 16inch M1 Pro, which under the same conditions (where the 14inch fans would turn on) amazingly stays constant at 43-45C without the fan turning on while connected to a 5k UltraFine display.