Questions tagged [temperature]

Using Apple products in wet, dry, hot, low- or high-pressure environments. Things like water-resistance, waterproof specifications, dust and other environmental considerations.

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Mac Mini 2018 (Intel) has CPU frequency being 0.8GHz from time to time - what should I do?

I have a Mac Mini 2018 with Intel CPU, but recently it starts to lock its CPU frequency. From time to time (e.g. several times a day), it becomes 0.8GHz for about 5 minute, and a few minutes of ~1GHz, ...
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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 ...
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Mac Mini's fan is not speeding up when it's under pressure

I have a Mac Mini 2020 with M1 chip. Fan is always working around 1700 rpm no matter the CPU temperature. Even if CPU temperature is 80 degree celsius, it works at the same speed as if it was only ...
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How to investigate cooling resp. kernel_task problem

On my macbook pro 2019 I'm running into this issue, where the infamous kernel_task starts blocking my computer after a couple of hours. I know that many people are experiencing similar issues for many ...
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What's the normal rpm and sensors temperature for Macbook pro 2019

I have a Macbook Pro 2019 (Core i7 16GB 16inch) and for normal usage with Google Chrome and VSCode for simple projects, it shows this temperature and fan speed Is it normal? Its fan are always on and ...
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How can I get the CPU temperature from the command line on Apple Silicon M1

I wanted to monitor handy temperature data like I did dozen times on Linux machines. No problem! I found a beautiful one-liner: sudo powermetrics --samplers smc | grep -i "CPU die temperature&...
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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, ...
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MacBook Air with M1 chip getting hot when I am opening Visual Studio Code, Terminal, Google Chrome

I am a full-stack web developer. I am using MacBook Air with an M1 chip. Last few days I am seeing the laptop getting very hot when I am opening Google Chrome, Visual Studio Code, and Terminal ...
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Terminal commands, where does the cpu temperature difference come from?

What's the correct way to get current CPU temperature? And why different programs return different CPU temperatures, for example, one command returns 70C, the other 52C sudo powermetrics -i 200 --...
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Mac fan always running, even after SMC reset

Ive got a 2017 15" MBP with an i7 CPU running Big Sur. The mac's fan has been running very loud for a few weeks now, i googled it and did an SMC reset, but this has not solved the issue. The fan ...
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Do late-2015 27" 5K iMacs have an AC/DC T2 secondary heatsink thermal sensor?

Since yesterday, on my iMac (A1419 EMC 2806) the fan is maxing out from power up, regardless of safe mode, recovery mode, or booting into Windows (via Boot Camp), diagnostics return PFM006 (SMC error) ...
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MacBook Pro (16-inch, 2019) hot & noisy fan when second monitor plugged via USB-C

I have a problem in over heating and noisy fan when I have the second monitor plugged via USB-C (I have tried different types of external monitor, and the problem does happen with every monitor). I ...
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MacBook burning and overheating

I have recently asked about this and everyone says it's fine. (Macbook went over 95C) When I was using my MacBook for about an hour (running at 55-70C) my keys were burning my hands so bad. My MacBook ...
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Macbook went over 95C

My MacBook just went over 95 °C/100 °C. I am scared that it might break my MacBook. I cleaned the MacBook screen and stuff but every time I do something on it, it instantly heats up very high. Should ...
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Which CPU temperature should I look at to monitor thermal throttling?

I'm using iStat Menus to display temperature readings from multiple sensors. I want to keep an eye on the CPU temperature to see if the cores are close to their thermal throttling threshold, but there ...
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Can you overcool an iPhone?

My iPhone sits in my car on a holder that clips into one of the air vents. In the winter, I don't want hot air from the heater to make my iPhone hotter, so I close that single vent. In the summer, I ...
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Is it possible to check the current speed of the fan on a 2016-2017 MacBook Pro? Is "resetting the SMC of your Mac" at least a safe thing to try?

I'm literally asking for a friend, who has a MacBook Pro 2016-2017 with no touch bar. (Big Sur 11.4, updated about 2 months ago). They report that recently (noticed within the last week) when the ...
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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 ...
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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 ...
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kernel_task eating 1000% of my CPU regardless of the CPU being at 56-58 degrees

I'm currently struggling with kernel task on my 1 year old Macbook Pro 16" 2019. Basically I'm currently using an external monitor which is connected to my macbook via a usbc to displayport cable ...
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How do I start my rMBP fans BEFORE login?

My rMBP late 2013, 15 inch, running Mojave 10.14, has some issues with the graphics card overheating. Once I'm logged in and have Macs Fan Control running, it's fairly stable unless I run some GPU ...
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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 ...
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3 votes
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MBP 16 becomes slow after a while when connected to external monitor

I've noticed recently that my 2019 MBP 16' (running latest version of Big Sur) becomes very slow and sluggish after being connected to an external monitor for a certain amount of time (the time varies,...
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iMac late 2012, temperature issues

I have a late 2012 iMac that's always worked really well but out of the blue it started to slow down significantly. It will work fine for half an hour and then slow to a crawl, cursor drags, starting/...
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CPU constantly hot with low usage [duplicate]

My 2019 16" MacBook Pro with 2.6GHz 6-core i7 processor on macOS 11.3.1 is constantly running hot at ~60°C even when the CPU usage is only 8-10%. I've checked the ActivityMonitor, but no app is ...
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MacBook Pro 16" temperature issue

I bought MacBook Pro 16" 2019 model 8 months back (Intel i7 version), and I can see that my MBP gets so much heat when I am using with external display and power adapter connected. I live in ...
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1 answer
483 views

Macbook Pro high CPU temp

I am currently using a macbook pro 16'' 2019 with intel i7. I am doing some calculation about molecules geometry and wavefunctions with some chemical professional software. They are very CPU intensive ...
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Can I Get Firmware For My New HDD?

I have another question. I have yet ANOTHER issue with my iMac. When the late 2009 iMac came out, replaced the internal hdd would make the fans go at full blast. I removed my Seagate ST3500418AS (...
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2 votes
2 answers
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How to prevent iPhone 12 Pro from overheating?

My iPhone 12 Pro (Max) gets extremely hot (to the point the screen dims, and beyond) with regularity, usually several times per day with just regular use of fairly basic apps. Others have reported the ...
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How to find the current temperature of an iPhone's CPU?

There are extremely useful utilities like iStats for viewing the CPU temperature on a device running macOS. Is there a way to view the current CPU temperature of an iPhone? Note: the reason I want ...
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MacBook Pro 2015 Fan Issues

I have a refurbished 2015 MacBook Pro 13", Intel i7 Processor, 16GB RAM and 512 SSD. When I first began using it I noticed it got unusually hot rather often, and so I downloaded Macs Fan Control ...
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kernel_task at ~1000% on a 2019 macbook pro [duplicate]

I use a MacBook Pro 2019 and it increasingly often starts to run kernel_task at ~1000%. Fans are blowing too. I tried to cool down the computer with some additional device and also used Fan control to ...
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2 answers
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New Macbook Pro 2019 has high temperature with low CPU usage

I got a Macbook Pro 2019 with Intel Core i9 Processors and it seems to heat up and get the fans spinning even with very low cpu usage. For Example, today when I was on a video call, Both my fans were ...
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Some of the keys on my keyboard are not working

Some of the keys on my keyboard are not working all of a sudden. I have a 2013 macbook pro. Some keys like the 'o' key work if I hold them down long enough, and some like 'e' don't work at all. This ...
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Are Apple silicon M1 Chip MacBook Air/Pro "laptops" usable on the lap?

I have a work-issued MacBook Pro (16-inch, 2019) running macOS Catalina, and it's not usable as a laptop, because it runs too hot, making it impossible to hold on the lap for any significant amount of ...
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MBP 16" i9 (Late 2019) Possibly Overheating [duplicate]

I just got a 2019 MBP 16" Model with 2.3 GHz i9 (turbo to 4.8GHz). When running simulations in MATLAB I have noticed the fans to spin quite loudly, and the CPU temp is rising very high. I have ...
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1 vote
1 answer
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Does using multiple monitors cause the iMac to run hotter?

I have noticed my iMac (Retina 4K, 21.5-inch, Late 2015) tends to run hot & noisy when watching some simple videos. I have tried whatever light duty diagnostics I can manage, such as activity ...
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Macbook Pro Mid-2015 - Rightside Fan 0rpm - Sensor Error?

I have a recurring issue which is causing me problems: My MacBook Pro mid-2015 rightside fan seems not to be working. I have used different software (Macs Fan Control, iStat) to determine this. This ...
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1 answer
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MacBook Pro 2020 Fan Issues

I recently purchased a MacBook Pro 2020 13" (1.4 GHz, 8GB Ram, i5). For some reason, when I open Chrome and watch Twitch my computers fans turn on and go crazy. After opening Activity Monitor, I ...
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2 votes
2 answers
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Severe GPU throttling freezes 2019 MBP16 after 30 minutes of Civilization VI

My brand new 2019 Macbook Pro 16" (macOS v10.15.7) suffers from severe GPU throttling after 30 minutes of playing Civilization 6. The freeze causes visual GPU artifacts that extend beyond the ...
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1 vote
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3 Days old Macbook Pro 16" CPU Temperature reaching 97C°

This is my first macbook ever. After 3 Days of using this 16" Macbook Pro, the temperature of the CPU core reaches 97°C. it happens when i am using Android studio with the simulator to test an 8 ...
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2 votes
2 answers
710 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 ...
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1 vote
1 answer
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Why are CPU fans running on my MacBook Pro 15" full blast while my laptop has just booted up and waiting at the login screen?

I know a lot of people have problems with the MacBook Pro's CPU fan running super loud and IMO the Activity Monitor is less than unreliable in telling what's really causing it… but let's check what ...
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1 vote
1 answer
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iMac mid 2011 T2 secondary heatsink heating up

My iMac mid 2011 started heating up about a year ago to the point that the hard drive broke and had to be replaced. I managed to replace the hard drive and I also replaced the power supply module as I ...
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1 vote
1 answer
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Why does a Macbook pro's internal screen flicker ONLY when it is on a GPU?

I have a Macbook pro 2017 (15 inch, touchbar). Since a couple of months ago, once the laptop is on GPU for a long time (at least 3-4 hours), the internal screen starts to flicker, like this: The ...
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MacBook Pro 13" 2017 GPU spike load

I have a MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports), Intel Iris Plus Graphics 640 1536 MB, macOS Catalina Version 10.15.5 (but the issue is older). Sometimes, mostly when I am using Chrome (...
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MBP dedicated GPU stuck in high power state - system kexts not loading

Here comes another dedicated GPU (dGPU) issue on my Late 2013 15" MacBook Pro! Problem: My NVIDIA GeForce GT 750M is not able to go into its lowest power state once automatic graphics switching ...
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1 vote
1 answer
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Macbook Pro fan running full speed, activity monitor shows no computationally intensive applications

My 2018 Macbook pro 15 inch fan is running at full speed all the time. I checked activity monitor and my idle was >95%. If this is a hardware problem, is there any way to fix it without opening up ...
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2 votes
1 answer
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Is 80-90 degrees celsius hot for MBP 2019 CPU temperature

I just converted to apple and bought the latest 16inch MBP with a 6 cores core i7 processor and 16GB of RAM. I am noticing that it gets hot easily, on idle the temperature is around ~45 degrees ...
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2017 MBP has started to degrade in performance - dreaded kernel_task

All - My normally stable mbp 2017 has started slowing down with kernel_thread dominating the CPU in recent weeks. This condition persists across reboots. My primary concern is that the machine is ...
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