is 87C to 93C too hot for GPU under no / normal load?

thefriendshipmachine

macrumors regular
Original poster
Apr 14, 2017
168
44
my 2014 retina imac GPU is always from 87C to 93C no matter what. This seems too hot for me. This is true even if I have no apps open.
[doublepost=1495655347][/doublepost]and sometimes it hits 99C

also I am using temperature gauge to check
 

nambuccaheadsau

macrumors 68000
Oct 19, 2007
1,835
433
Nambucca Heads Australia
Last edited:

cynics

macrumors G4
Jan 8, 2012
11,586
1,886
That is waaaay to hot for no load. Check your processes to verify there isn't a load and also but your hand over the vent in the back. If the temp sensor and software is accurate you'll feel that coming out of the back very easily.
 

thefriendshipmachine

macrumors regular
Original poster
Apr 14, 2017
168
44
That is waaaay to hot for no load. Check your processes to verify there isn't a load and also but your hand over the vent in the back. If the temp sensor and software is accurate you'll feel that coming out of the back very easily.
Different opinion no that is not high and are the fans ramping up? Depending on your gfx card this article advises range between 85-105ºC is the norm. Check Activity Monitor to be sure nothing is actually running. One never knows with these items in Login.


http://www.tomshardware.com/answers/id-2589207/imac-gpu-heats-105-celsius.html


https://forums.macrumors.com/thread...lock-throttling-heat-and-performance.1815601/
no processes are taking up CPU time and my fan is only at 1400 to 1500 RPM but yet the GPU is at 88C. Is it weird that it would be at 88C and the fans wouldnt try hard to cool it down?

Also I cant find an app that lets me see which processes are using a lot of GPU. Do you know of any? Maybe there is a rogue process using lots of GPU and very small CPU and I cant find it.
 

cynics

macrumors G4
Jan 8, 2012
11,586
1,886
no processes are taking up CPU time and my fan is only at 1400 to 1500 RPM but yet the GPU is at 88C. Is it weird that it would be at 88C and the fans wouldnt try hard to cool it down?

Also I cant find an app that lets me see which processes are using a lot of GPU. Do you know of any? Maybe there is a rogue process using lots of GPU and very small CPU and I cant find it.
I was just curious about processes in general. If there was anything that used the GPU.

What are you using to see the sensor temp? Are you using a third party fan controller?
 

thefriendshipmachine

macrumors regular
Original poster
Apr 14, 2017
168
44
I was just curious about processes in general. If there was anything that used the GPU.

What are you using to see the sensor temp? Are you using a third party fan controller?
I am using temperature gauge to check my temps, and im not using any custom software no
 

keysofanxiety

macrumors G3
Nov 23, 2011
9,534
25,261
I am using temperature gauge to check my temps, and im not using any custom software no
If there are any malicious idle processes, it's always worth running a scan through MWB as it'll only take a minute: https://www.malwarebytes.com/mac-download/

Otherwise, the graphics are running way too hot for idle. I suspect the graphics may be failing or there's a serious issue with the cooling system. Did you say you had an Apple Store local to you? Beyond taking it apart there's really nothing you can reasonably do at this point but take it in for servicing.
 

diipii

macrumors 6502a
Dec 6, 2012
618
550
UK
Wrap it round a brick and bounce it off Cook's head. Everyone with an over heating iMac due to thin-obsessed design should do this then maybe he might just get the message.
 

cynics

macrumors G4
Jan 8, 2012
11,586
1,886
It sounds to me like the fan isn't ramping up (or possibly not running depending on ambient) or you are getting a false reading via software because even if the sensor was faulty the fan would ramp up.

I use TG Pro for seeing system temps and setting fan speeds (although I just let the stock profile handle it). Its not free software however its a very good piece of software and well worth the 10 bucks or whatever it is. When it comes to temps and fan settings its probably the most comprehensive piece of software available, at least in my opinion. Its also well supported, still sees updates and I even think one of the devs or owners/employees post on this forum from time to time and takes user feedback very seriously.

This is just the drop down from the menu. The actually preferences offer MUCH more...

Screen Shot 2017-05-26 at 1.37.29 PM.png


And no I have no other affiliations with them.

There is other free software available. However with this (or other software) you can test your fan to make sure it works and know the sensor readings are accurate.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.