iMac 5k i7 cpu hits 100 °C regularly

Read my comments one post above yours.

You do not like the High internal temps, get yourself a small desktop/table fan a let it blow cooler air on the back of your iMac.

I have always felt iMacs run way too hot and can cause premature internal component failure.

Apple has always cared more for near silent computer operation over excessive internal temps.

I would rather have a much cooler running Mac that will last longer than a Mac that runs totally silent, but will have to replace with another expensive costing Mac much sooner than I like or prefer.

Do what you will.

If you find out that these newer iMac models do run hotter, things you can do is run a software fan control with your iMac.

You can manually regulate the iMac's internal fan/s.

Apple is more concerned about thin design and quiet operation than worrying about prolonging the operational life of their computers.

I have been convinced for a long time that Apple, from the time of these new aluminum clad iMacs, has purposely changed the way they design and build their computers, now, to only last 5-6 years if you run them the way Apple wants you to run them.

Heat is enemy of all micro/nano electronic technology.

Run a small tabletop fan and let it blow cooler air from behind on the back of your iMac to help keep it running cooler, also.

I do this with my two iMacs to keep them running cooler to prolong component life.

I want my Macs to run as cool as possible.

I can't afford to purchase a new Mac every 5-6 years.

Good Luck!

I'm having the same issues with my 2017 Retina 5K27-inch iMac , 528GB SSD, 40GB RAM and 4,2 GHz Intel Core i7.

Lightroom Classic often makes the CPU temp go up to 99º C , especially when performing file operations like exporting images and building previews. Photoshop CC 2018 never forces the CPU to very high temperatures. Almost all applications I'm using to edit my RAW images make the CPU temp regularly going up to 99º C. File operations in Adobe Bridge and ON1 Photo RAW, like indexing, copying, exporting or moving, also make the CPU temp going up to 99º C. I find the fan comes in too late at 99º C. But if it is finally running it goes up to about 2500 RPM very fast and the temperature falls back very quickly to approximately 80º C. Users in other forums say 100º C this is not a problem at all. But I am asking myself how long the new i7 can run hot as 94-100C, safely without breaking something. But until now I haven't found any solid and clear answer in this issue.

hello

1 month ago i bought my new 27" imac like your (cpu:i7 4.0ghz + gpu: 4gb AMD Radeon R9 M395X...). I bought it because i work a lot with photoshop, indesign and in addition to this i started to "learn" cinema 4d... So when i start some rendering process (of few minutes), each cpu's core reach temperature of 98/100° not less than 96° for all the rendering process. So i have your same problem!!! How much time it will resist??? I don't think your is a isolated case becouse my imac do the same. Can you please tell me how did you resolve? Thanks

Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity

Be sure to check that none of your third-party apps in use are in a runaway state. However, those temps are not uncommon for any machine doing the same chores as yours. If the processors overheat then they will in turn cause the machine to shut down.

FWIW, my 2015 5K runs about 100 F normally after getting my previous problem repaired. Tops out at about 117F when running benchmarks.

None of this sounds right to me for a new iMac.

A New iMac shouldn't be running this hot!

If you have had this iMac for less than 14 days, backup any new data you have on this new iMac, bring in your entire iMac system in the box, into an Apple Store, have them plug this in and show/demonstrate to them the issues you are having and see if they can diagnose the issue.

If the diagnosis isn't to your satisfaction, you can return this iMac for a full refund (wipe the drive of all your data and restore the iMac to its factory state, if still in the Apple Store, have a Apple employee or Genius help you with this) and then re-order/re-purchase another new iMac with everything you ordered the first time, and see if the same issue exists or to confirm that the first iMac you purchased was defective is some way the couldn't be diagnosed.

Good Luck!

There is sonething definitely wrong with this iMac.

You shouldn't be running the iMac's internal fans at 2800-2900 RPMs.

This is "Ludricrous Speed!" ( with all due respect to Mel Brooks).

You should only be running your iMacs fans at or below 2000 RPMs or so.

Bring it back in to your Apple Authorised seller.

If they cannot find the issues for the high heat, if they will take back for a full refund and once someone here can vouch for whether the high end iMacs have a pronounced heat issue., you can decide to try purchasing another one on the chance that the first iMac you purchased was a defective unit.

Good Luck!

I am pretty much a tech guy, and I have to agree with Apple.

A brand new Mac shouldn't be overheating.

You're the first person to post a question about heat issues with a brand new iMac.

So, MSO here, your heat issues is isolated defect to the iMac unit you received and is not a common, known issue for new iMac models.

So, I would bring back the whole kit and kaboodle and have an Apple/computer tech look this issue over and if there isn't a good resolution to fix or resolve the issue, return the iMac for a full refund.

Good Luck!

The product is a disaster. The one fan simply isn't adequate to cool the system. I'm glad that I didn't get the i7, although the problem seems to be the LCD which runs way too hot. I've got TG Pro controlling the fan which is the only thing that keeps the system from shutting itself off as the system fan management doesnt work properly (or insists on running the fan at full tilt for no reason).

The iMac 5K is a great argument for blowing a day building a hackintosh.

What KIND of fan? Amazon link please

The air intake for the unit is on the bottom, so the ideal place to add a fan generally won't work. Do you just blow a cyclone fan at the back of the screen?

I've seen videos of guys that drilled holes in strategic places but I'm still under warranty and I'm not ready to go that route quote yet.