Cpu Temp Monitor Macbook Pro

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Sensei is a relatively new app that lets Mac users keep track of performance and other hardware details, such as battery health, RAM management, CPU usage, and more. The app was updated today with full support for the new Macs with M1 chip, so users can now monitor the temperature and fan of these Macs.

My 9to5Mac colleague Michael Potuck tested Sensei when it was released in January this year, and he said the app has a “gorgeous UI with lots of great functionality for monitoring and adjusting a Mac’s software and hardware performance.”

Among all the features that the Sensei app has, users will find a startup speed optimizer, disk cleaner, SSD Trim enabler, disk health analyzer, CPU and GPU Monitor, thermal dashboard, app uninstaller, and much more.

The latest version of Sensei for Mac adds support for new computers with Apple Silicon, which includes the new Mac mini, MacBook Air, and MacBook Pro with M1 chip. Users running Sensei on these machines can now check the CPU temperature and also control the fan on compatible models.

Developer Oskar Groth mentioned in a blog post that the M1 chip has even more temperature sensors compared to Intel processors, so the app will be able to offer even more precise details.

An interesting observation is that the M1 Macs seem to have a greater amount of temperature sensors, with a larger portion of them located on the new Apple Silicon SoC. This is likely in order to benefit the asymmetric multiprocessing techniques employed in the new CPU architecture, where the CPU switches between high-performance cores and high-efficiency cores dynamically in order to maximise performance per watt.

Users can buy the Sensei app for $59 with a lifetime license or with a one-year license for $29. For a limited time, these prices will be at a 50% discount for Black Friday. There’s also a trial version available on Sensei’s official website.

Optimal temperatures for today's average CPU's are 65 and below, 70+ gets undesirable, 80+ is not good, 90+ is very bad, and 100+ is incredible. This is part of why I have issues with macs because. Install and open the TG Pro app on your M1 MacBook Pro or Air to check the CPU temperature. The main window shows temperature for all of the MacBook components including CPU, GPU, battery, SSD, logic board, power supply and wireless cards. To check the CPU temperature, you can look for “Cores” temperature.

  • CPU temp is 99C, heatsink A 57C, heatsink B 56C, and the Enclosure base is 27C. The fan, as usual is running over 6000 rpm.
  • Temp Monitor Temp Monitor (And by Temp it means Temperature) is one of the best Mac temperature monitors that will help you know the status of your Mac CPU temperature in its own smooth way. Temp Monitor will look after the processes and running apps on your mac along with the available sensors.

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Over the past several months, my 2018 15' MacBook Pro developed thermalperformance issues. Here’s what I did to fix the problem. The two key changeswere that I switched to using the right side Thunderbolt3 portsinstead of the left side ones, and I cleaned the dust buildup in the internalfans.

The Problem

The problem first started when I noticed my CPU usage spiking to near 100%. Inthe process list, I saw kernel_task taking up most of the CPU.

I learned that macOS does thisintentionally to prevent the CPU from overheating.

One of the functions of kernel_task is to help manage CPU temperature bymaking the CPU less available to processes that are using it intensely. Inother words, kernel_task responds to conditions that cause your CPU to becometoo hot, even if your Mac doesn’t feel hot to you. It does not itself causethose conditions. When the CPU temperature decreases, kernel_taskautomatically reduces its activity.

Fan Speed

For many years, I’ve usedsmcFanControl to manually increasemy fan speed because I don’t mind fan noise, especially if it means gettingbetter performance out of my laptop or being able to comfortably put it on mylap.

However, it stopped working reliably after a macOS update. I purchased iStatMenus, which comes with a well supportedfan control feature. Note that you have to buy it from their own website to getfan control. The Mac App Store version doesn’t include that particularfeature for some reason.

I turned the fans up to max regularly in an attempt to preempt the kernel_taskissue, but it still kept popping up.

Thunderbolt 3 Ports

I found this excellent StackExchangeanswer that recommends usingthe right side Thunderbolt 3 ports instead of the left side ones. Apparently theports aren’t equal. The left ones can cause thermal issues. Also, using bothports on either side can be problematic.

I use a Thunderbolt 3dockfor a single cable solution that handles charging and all my peripherals,including monitors. I tended to plug it into a left port. I switched it over toa right port and saw an immediate difference in temperature. iStat Menus reportsthe temperatures from various sensors.

I tested and verified that using a left port caused the CPU temperature to go upmuch higher than using a right port.

For a few months, this simple change was enough to resolve the issue. Luckily, Iwas able to continue using a single cable, and I didn’t have to plug in my dockon one side and then a separate charger on the other side.

Resolution Scaling

Then the problem started happening again. I also experienced issues playingTabletop Simulator,Counter-Strike,and Valorant (on Windows through BootCamp), all games that my machine should be able to handle without any problems.It would stutter even after I turned the resolution and graphical settings allthe way down.

I thought it might have something to do with my monitors. In my desk setup, Ihave two external monitors that I run at a scaled resolution that looks like2560 x 1440.

Note the warning that “Using a scaled resolution may affect performance.” Theproblem is that macOS achieves thisresolution by renderingeverything in double the size and then scaling it down. So my MacBook isessentially doing the rendering work for two 5K monitors.

See thisthreador this StackExchange answerfor more details.

I considered turning the resolution down to look like 1920 x 1080, which isn’t ascaled resolution, but then everything looked too big.

I was pretty frustrated at this point, especially becauseZoom video calls started freezing up on me. I got into thehabit of unplugging my monitors before joining video calls.


This entire time, I thought the problem was my MacBook producing too much heat.Beyond making the fans run at max more often, I never considered that theproblem could be that it stopped being able to get rid of heat.

Then I read thispostfrom someone who cleaned the inside of a MacBook after 7 years of use. I wasinitially skeptical that clogged fans were my problem because my MacBook wasonly about a year and a half old. But the more I thought about it, the more itmade sense, and I didn’t have anything to lose by trying to clean it.

To open my MacBook, I followed this iFixitguide.


I learned that by default, macOS turns on the MacBook when you press any button(not just the power button) or open the lid. This was very surprising to me. Idid recall being confused in the past when my MacBook turned on even though Ididn’t press the power button. When it first happened, I thought there wassomething wrong. At least from Apple’s perspective, it turns out this is afeature, not a bug.

So to make sure the MacBook stays off through the process, you have to run thisin a terminal to turn off booting on lid open.

To turn the setting back on later, run this. Though I just left mine off after Iwas done.

Removing the Bottom

Cpu Temp Monitor Macbook Pro

The next step was to take off the screws. Apple uses pentalobescrews.

I’ve opened MacBooks before to replace swollenbatteries, so I was prepared with anelectronics screwdriversetthat includes pentalobe bits. I also had a can of compressedair.

I removed the screws and learned that Apple has made the bottom harder to openbecause now you need a suction cup. I repurposed the suction cup from my cardash cell phoneholder.

You have to use the suction cup to lift part of the bottom enough to slide insomething to release a few internal latches. I used a library card.

Cleaning the Dust

Once I got my MacBook open, it was obvious that dust was the main cause of myperformance issues. Just taking the bottom off caused a cloud of dust to comeout.

There was also cat hair from this troublemaker.

Both fans were totally gunked up.

I used compressed air to blow out the dust. I also used a toothpick to get someoff the fans that wouldn’t come off from blowing alone.

I put the cover back on and haven’t had any more thermal performance issues.


It would be nice if macOS could provide some actionable advice whenkernel_task is trying to stop the MacBook from overheating. I would haveappreciated an OS suggestion to use the right side Thunderbolt 3 ports.

Cpu Temp Monitor Mac

But I also never considered that my laptop fans could require cleaning. Inretrospect, that’s foolish because I’ve seen how dirty it can get in desktopPCs, and I know that heat is an inhibitor to computer performance. It’s justlike running in humid weather. Your body starts shutting down because its mainmechanism for getting rid of heat (sweating) stops working because humidityprevents sweat from evaporating.

Macbook Cpu Temperature Monitor

It would be cool if the machine could detect and alert when the fans are nolonger effective, perhaps with a sensor that looks for a lack of airflow at thevents.

Cpu Temperature Monitor For Mac

To prevent the issue from occurring again, I’ve set up a recurring task inTodoist to remind me to clean mycomputers once a year.