iMac M1 overheating

Hi, When I work with Adobe Lightroom Classic, the processor temperature of my iMac M1 can reach 99° Celsius and use 100% of the charge for long minutes, for normal operations in this software.

I don't think this is normal!

When I noticed this, I closed all other applications, browser, Photoshop, etc., without the situation improving. Am I a victim of bad design on Apple's part?

I had to replace my iMac 27 in the summer of 2021. I was tempted by the new iMac with the Apple M1 chip. The performance was better than the old iMac, according to Apple. So it's an iMac with the M1 chip, 16 GB unified memory (max at the time), 1 TB SSD.

I work almost every day with Adobe Lightroom Classic. At this rate, how long will this computer last?

Does anyone else have this problem?

Thanks for your help,

Michel

iMac 24″, macOS 13.6

Posted on Nov 18, 2023 9:01 AM

Reply
Question marked as Best reply

Posted on Nov 18, 2023 3:33 PM

Please post the entire report using the Additional Text button:



And, there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This documents describe what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community and Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support.  


There are no known viruses, i.e. self propagating, for Macs.  There are, however, adware and malware which require the user to install although unwittingly most of the time thru sneaky links, etc.   


Anti Virus developers try to group all types as viruses into their ad campaigns of fear.  They do a poor job of the detecting and isolating the adware and malware.  Since there are no viruses these apps use up a lot of system resources searching for what is non-existent and adversely affect system and app performance.


There is one app, Malwarebytes, which was developed by a long time contributor to these forums and a highly respected member of the computer security community, that is designed solely to seek out adware and known malware and remove it.  The free version is more than adequate for most users.  


Unless you're using a true VPN tunnel, such as between you and your employer's, school's or bank's servers, they provide false security from a privacy standpoint. 


Uninatll any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac according to the developer's instruction.


6 replies
Question marked as Best reply

Nov 18, 2023 3:33 PM in response to Papinachois

Please post the entire report using the Additional Text button:



And, there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This documents describe what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community and Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support.  


There are no known viruses, i.e. self propagating, for Macs.  There are, however, adware and malware which require the user to install although unwittingly most of the time thru sneaky links, etc.   


Anti Virus developers try to group all types as viruses into their ad campaigns of fear.  They do a poor job of the detecting and isolating the adware and malware.  Since there are no viruses these apps use up a lot of system resources searching for what is non-existent and adversely affect system and app performance.


There is one app, Malwarebytes, which was developed by a long time contributor to these forums and a highly respected member of the computer security community, that is designed solely to seek out adware and known malware and remove it.  The free version is more than adequate for most users.  


Unless you're using a true VPN tunnel, such as between you and your employer's, school's or bank's servers, they provide false security from a privacy standpoint. 


Uninatll any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac according to the developer's instruction.


Nov 18, 2023 9:12 AM in response to Papinachois

It will help us get a good idea of what is causing your problem if you provide a report of your system, that way we do not have to play 20 questions with you. The report we are requesting does NOT provide any personal information and is extremely safe to use. Please navigate to www.Etrecheck.com and download the free version of EtreCheck. Once you have you downloaded the app and installed it, please run the report and save it. This report will help us get a good idea what has been installed on your system and help us be able to diagnose what may be wrong.


When you have your report, you can attach it when you reply to this message and we can then review it and help you determine what is needed to get your system running well again. 


For instructions on how to download your EtreCheck report and attach it to your reply to this message please click How to use the Add Text Feature When Post… - Apple Community It is helpful to us if you download the report to your Desktop.



Nov 18, 2023 2:14 PM in response to rkaufmann87



Fair comment but it has been said that the following can be done on M1 Macs to emulate resetting SMC.


Apple’s support has said that the M1 Macs should do something similar to

a SMC reset by shutting down the computer and leaving it turned off for

at least 30 seconds before turning it on again. Since there is no way

to test if it actually does something, we can not determine if it is

true.

Nov 18, 2023 3:13 PM in response to Mal-S

Hi, I had my iMac scanned with EtreCheckPro and found that the most voracious resource user wasn't Lightroom but my antivirus. I had my doubts about the relevance of using anti-virus software on a Mac and did some research in the community to confirm that it wasn't a very good idea as it could conflict with the system and that Apple was doing a very good job of protecting against viruses. I then did a "clean" uninstall of the antivirus and resumed my work in Lightroom. The processor temperature returned to normal.

The second resource hog on my iMac is "opendirectoryd", which uses just over 50% of the CPU. Is there any way of reducing this glutton's greed?

Many thanks to all of you for your help!

Michel

iMac M1 overheating

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.