imac 27 2017 i7 7700k temp hits 100 under cpu burn test

[paukivbashne]

So as stated im having 100 C on my cpu (i7 7700k) Imac 27 2017
THis is under heavy cpu load on all cores ( i used this command to stress test cpu -
yes > /dev/null & yes > /dev/null & yes > /dev/null & yes > /dev/null &)
I have never had this high temps on my previous Imac ( 2012 -2015 had all of them) or any other device. I always tought this is the temperature of overheating CPU.
so my question is - is it normal for i7 7700K? can anyone test this on their imacs?
these new macs seem much hotter and noiser then previous generations....

 

[niteflyr]

So as stated im having 100 C on my cpu (i7 7700k) Imac 27 2017
THis is under heavy cpu load on all cores ( i used this command to stress test cpu -
yes > /dev/null & yes > /dev/null & yes > /dev/null & yes > /dev/null &)
I have never had this high temps on my previous Imac ( 2012 -2015 had all of them) or any other device. I always tought this is the temperature of overheating CPU.
so my question is - is it normal for i7 7700K? can anyone test this on their imacs?
these new macs seem much hotter and noiser then previous generations....

Very normal. Don't worry. I see it during encoding everyday under heavy CPU load.

 

[priitv8]

Especially, if you run in Turbo Boost mode, your CPU will hit the water boiling temps.
Happened also on my 2013 MacBook Pro with quadcore i7.
I tend to disable Turbo Boost on my Macs in everyday use.

 

[paukivbashne]

thanks for replyes guys.
what wierd is that my previous mac had 6700k and it was much cooler. And according to intel cpecs both cpu's got 91w tdp.
i even reapplied thermal paste and checked the the cooling fan.. nothing changed

 

[1204949]

It's unfortunately normal for these i7 7700K inside the iMac. The current i9 9900K and i5 9600K are much better. Fans won't spin higher than 1800 rpm under load.

I guess it's the TIM in conjunction with high clock rates. i5 8500 also gets rather hot inside the iMac albeit not as hot as the i7 7700K.

I tested them all under full load (Cinebench R20):
i7 7700K, 2700 rpm, ca. 98-100°C
i5 8500, 2250 rpm, 95°C
i9 9900K, 1800 rpm, 90°C
i5 9600K, 1200-1400 rpm, 85°C

 

[throAU]

That's apple's "superior cooling solution".

(pc in my sig hits 55 C under load)

 

[_Skyfire_]

It's unfortunately normal for these i7 7700K inside the iMac. The current i9 9900K and i5 9600K are much better. Fans won't spin higher than 1800 rpm under load.

I guess it's the TIM in conjunction with high clock rates. i5 8500 also gets rather hot inside the iMac albeit not as hot as the i7 7700K.

I tested them all under full load (Cinebench R20):
i7 7700K, 2700 rpm, ca. 98-100°C
i5 8500, 2250 rpm, 95°C
i9 9900K, 1800 rpm, 90°C
i5 9600K, 1200-1400 rpm, 85°C

Interesting. Should probably test my setup. I have understood that an i5 7600K would be significantly cooler than the i7 7700K

 

[clystron]

Have you checked your clock-speed under that load? 100°C is borderline for this CPU, it might be throttling already. If it is still going full speed you should be fine. The 7700k runs a little hot, I see around 80°C when running handbrake at 4.4GHz all-core with a massive air-cooler in my PC-rig at home and cpu stress-tests tend to cause more heat.