All Questions
16 questions
22
votes
4
answers
1k
views
Multi threaded CPU intensive task throttles CPU way before temperatures limits
I have written a very CPU intensive threaded task that works as expected on my 2012 MacBook Pro quad core. I turn it loose with 20 threads and the temperatures get up to about 100 °C as measured with ...
- 221
6
votes
1
answer
2k
views
MacBook Pro 15" 2015 CPU throttles down to 0.8 GHz
My MPB has had this problem for years every time the ambient temperature gets a bit warmer. It starts in the spring and gets ridiculous during the summer.
The MBP clocks down its processor to 0.8 GHz,...
- 161
4
votes
3
answers
13k
views
High CPU and energy usage in Safari
Energy impact of Safari is extremely high on my Macbook Air Mid 2013 El Captian 10.11.2. It lead to high usage of CPU (Temperature ~65.0°C) and the CPU fan is running in full speed (6500.0 RPM) ...
- 203
2
votes
2
answers
866
views
Mac mini fan never surpasses 7%, even while stress testing
I have a 2014 Mac mini with an Intel Core i5 processor. I noticed that no matter how much I used it, the fans barely ramped up. Using iStat Menus I noticed that it would usually stay around its base ...
- 9,234
2
votes
2
answers
1k
views
Seemingly random CPU throttling
My 2018 macbook pro with i9 processor running Catalina version 10.15.6 seems to randomly throttle the CPU frequency even with low CPU utilization and lowish temperatures:
I am using a docking station ...
2
votes
1
answer
1k
views
Throttle CPU to reduce fan usage on MBP
I am using an MBP (late '19, 8-Core i9, macOS 12.5). On medium and heavy usage, the fans kick in, as expected. However, I sometimes want to use the MBP casually and would be willing to throttle down ...
- 23
2
votes
2
answers
3k
views
CPU throttled to 0.8GHz due to "GPU LIMIT PROCHOT"
Suddenly my iMac (late 2013) started to throttle CPU to 0.80GHz, everything becomes super sluggish. It happens ~5-10 min after a fresh reboot, sometimes it goes back to full speed for short periods, ...
- 21
2
votes
1
answer
361
views
cpu clock too low / force cpu clock / overclock
I have a MacBook from a few years back.
When I use it write some code and browse the internet, the fans go very fast and the noise is horrible. But the temp shows only 70 C.
So I used SMC to force ...
- 121
1
vote
1
answer
2k
views
High kernel_task CPU usage problem
I have an old MacBook Air 13" from 2013. It has been working flawlessly up to maybe 6 months ago, where it started being insanely slow. I have identified the cause to be the dreaded kernel_task, ...
1
vote
1
answer
1k
views
Should my CPU load be that high?
I have a mid-2009 13" core 2 Duo MacBook Pro running High Sierra w/ upgraded 8 Gb RAM.
On Activity Monitor I usually get 20-40% 'idle CPU' with only Finder, Safari (3 tabs) and Activity Monitor ...
- 31
1
vote
1
answer
1k
views
MacBook Pro 16 inch thermal throttling even when temperatures are low
Sometimes when I start to use MacBook its cpu speed limit stays at 20% despite the low temperature. I use the app "HOT" to monitor it. Sometimes even when temperature is 60 Celsius cpu ...
1
vote
1
answer
848
views
CPU speed of the Macbook Pro Retina downclocked
I've a MacBook Pro 15" late 2013. For a long time I have encoded videos with handbrake and the CPU was very hot for hours. The clock speed was about 2.8GHz (I have the 2.3GHz model) and the ...
- 111
1
vote
0
answers
84
views
kernel_task slowing down on Intel-based MacBook Pro
I have a 2020 MacBook Pro 16", the last of the Intel based Macs. Just in the last couple of weeks it has been slowing down due the kernel_task process going up to 1000% CPU usage.
I have done a ...
- 111
1
vote
0
answers
253
views
MacBook Pro 16 2019 i7 - CPU throttling
My MacBook Pro starts to throttle its CPU to 0.8 - 1GHz over time, even when watching 2k youtube videos, which of course is not a normal behaviour.
Here are some details about my issue. First, pmset:
...
- 111
0
votes
1
answer
448
views
Thermal throttling after Big Sur update
My 2015 i7 MacBookPro started to thermal throttle after the update to Big Sur:
in previous system, the Mac went up to 90°C degrees before slowing down. And it would not thermal throttle at all. The ...
user418915
0
votes
1
answer
260
views
mid-2015 MBP, 16GB, upgraded from 2.5 to 2.8 model. Benchmarks are almost the same, even worse for the 2.8 in some tests
Any thoughts on why this would be? I migrated everything at power-on on the new mac after formatting its Samsung EVO 970 plus, so they have identical drive contents and OS. Also, the 2.8 gets hot ...
- 261