MBP get heated up very quickly

mohitvarma

macrumors newbie
Original poster
Jul 10, 2019
2
0
I got MBP a month ago.

It gets heated up very quickly when I start using VM and some coding software.

Though applications I use are little heavy however as I bought a top end MBP I wasn't expecting this heating.

I use Fanny app to monitor CPU temperature and it shows CPU temperature of up to 68-75 degree Celsius sometimes . and then after some time back to 40-50 degree Celsius.

Can someone add their thoughts?

my config:
 

eastwest

macrumors newbie
Jul 10, 2019
1
1
Came here to say the same. I have been using my i9 MBP 15" for few days now and the fan noise is quite annoying. At the moment I'm just running a simple python script and while total CPU load is only 9% (under activity monitor CPU% 30-50 for python) the fans are making constant audible noise. I have a 13" 2015 MBP next to me and when I'm running the same scripts I can barely hear the fan.

My question is that are all 2019 MBP the same? I have still time to return my 15" one and get a 13" one if they run less cooler and quieter (I can sacrifice power for that). Does anyone has experiences?
 
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mohitvarma

macrumors newbie
Original poster
Jul 10, 2019
2
0
Came here to say the same. I have been using my i9 MBP 15" for few days now and the fan noise is quite annoying. At the moment I'm just running a simple python script and while total CPU load is only 9% (under activity monitor CPU% 30-50 for python) the fans are making constant audible noise. I have a 13" 2015 MBP next to me and when I'm running the same scripts I can barely hear the fan.

My question is that are all 2019 MBP the same? I have still time to return my 15" one and get a 13" one if they run less cooler and quieter (I can sacrifice power for that). Does anyone has experiences?

I understand.
Maybe the huge machine configuration is the issue behind the heating and fan running. (since for running the same python scripts, 13'' uses 4 CPU cores and 15" in our case uses 6 CPU cores and hence more processing is done to achieve speed in our case and so the heating thing)

Try using apps like Fanny or Macs fan control to monitor CPU temperature to understand the heat pattern in detail.

High speed or little tolerable noise is something I guess we have to choose among.
when did you buy?
 

jerryk

macrumors 601
Nov 3, 2011
4,860
2,405
SF Bay Area
I got MBP a month ago.

It gets heated up very quickly when I start using VM and some coding software.

Though applications I use are little heavy however as I bought a top end MBP I wasn't expecting this heating.
More cores, faster clock = more heat generated. Heavy application load = more heat generated. More heat generated = more heat that must be dissipated. There is no mystery as to why your fans run more often, you are asking you system to do more.

You should hear my 2018 MBP 15" when I train ML models. Fans run wide open for 20-30 minutes and CPU clock speed reduces to prevent exceeding temp limits. All as expected.
 

fokmik

macrumors 68040
Oct 28, 2016
3,805
3,096
USA
Say ty that you hear the fans...since Apple priorities silence over the rest
So its a good thing, bec it keeps the cpu temp under 90-95C i guess
 

OSX15

macrumors member
Jun 2, 2014
94
28
Cyberspace
Say ty that you hear the fans...since Apple priorities silence over the rest
So its a good thing, bec it keeps the cpu temp under 90-95C i guess
Does it? My new Macbook Pro 15" I9 2.3 with VEGA 20 is between 96 and 99 degrees celsius when doing Cinebench R20, Intense VMs or video rendering. Are others also experiencing these temps? And am I the only one who has a very hot area above the touchbar with these new models? Mine was build in the last week of June 2019.