Imac (27 inch) temperatures

[yorigos12]

Hi all.

Please forgive my lack of understanding, but I have a question about the temperatures of my 2011 Imac. I've been told (by the company that replaced my GFX card) that the temperatures in my model run too high and that I should run Macs Fan Control (and I do, version 1.4.8)...

The problem is this: lately it has been running at 60 degrees C regularly, so the fan has been louder. Can someone please tell me what a dangerous temperature might be? I hate the volume of the fan and would love to be able to turn it down if possible.

The file included is a screen grab of the temperatures while playing a video (as well as minor word processing).

Any help would be greatly appreciated!

Thank you!

 

[Itzamna]

Dangerous temperatures would be always at 90'ishºc. But at that point the machine starts to protect itself. Be it by throttling down or even shut down if things get really hot. And, unless you are rendering video for a long period, I doubt you can get your computer to run that hot for a long period on a normal usage.
At 60'ish on a 7 years computer is not that big of a deal if you are using it.
As for the temperatures you shown, they seem normal to me, specially if you are watching a video (some video decoding can be very demanding and warm things up)
[doublepost=1513048936][/doublepost]Just to complete my post. I have a 2011MBP connected to a Thunderbolt Display at this moment and I have my CPU at 56-57ºc with only safari open. My fans are both at 4000 rpm.

 

[yorigos12]

Thank you! I vaguely remember the guys at the shop telling me not to exceed 80 degrees, but that was over a year ago...so it's hard to be sure.
Their claim was that the high temperatures are what busted my GFX card. As I have very little technical knowledge, I tend to trust their opinions.
Thanks for your help.

 

[Itzamna]

Yes, high temperatures can be very damaging, special during a long time span like 7 years. Heat changes the composition of the materials that compose any components of a computer, which can reduce performance and eventually can induce failure. In your case it was the GPU. The constant warming up and cooling down is also damaging in a long period, specially to the welding (probably not the right expression, but English is not my main language) of the chip. But with an old machine, fans tend to run faster for longer periods of time.


But your temperatures are normal, don't worry. As for the fan noise, there is not much you can do.

 

[yorigos12]

Gotcha. Well, thank you for your help. You've eased my mind