CPU Running close to 55 degrees celcius in one of the cores

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Obie146

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Dec 4, 2013
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I am running an i7 3770K CPU (NOT overclocked) and playing Diablo 3. I regularly checked the core temp, simply because the graphics were running great and perhaps seeing all the fire in the game made me feel I needed to check. For the most part the CPU cores did not seem to run much higher than 37 degrees Celsius. However, after a few hours I signed off and noticed that the cores had peaked at around 55 degrees Celsius!! I understand that the Tcase temperature is around 67 degrees Celsius. My concern is that if my regular running temperature can jump from 35 to near 55 degrees Celsius during game play, whats to keep it from going up another 20 degrees (75)? I have good airflow, 6 fans including a 140mm top vent and a Noctua NH-U9B SE2 CPU Heat Sink With Dual Noctua Fans. Please help! I can't understand how a game that is well within my requirements can potential destroy my computer.

-Mike
 
Solution
nukemaster
I personally use HWmonitor. It can also monitor other parts of the system, but be warned it messes up on some readings so if it says some strange very high or very low temp, chances are it was a misread.

http://www.cpuid.com/softwares/hwmonitor.html

Screen of HWmon, but this is an older cpu red are the misreads
rk62.png


For cpu only CoreTemp is a good option.
http://www.alcpu.com/CoreTemp/
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nukemaster

nukemaster

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Nov 23, 2004
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Many things can effect the temperature like that.

Simply put when the system is not under heavy load the cpu drops voltage and clocks down to give you lower temperatures, but when needed it will clock up and even boost if not all cores are in use.

You can always test about 10 minutes or so of Prime95 to get the worst case "ever"(AVX Linpack is hotter) temperature.
 
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snowctrl

snowctrl

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Sep 10, 2013
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You have 6 case fans - how are they configured in terms of push/pull? Make sure you have more air being sucked in than blown out - you need air pressure in the case to aid the fans expelling hot air. If air pressure is working against them, they will be less effective, more heat will stay inside the case, and you will get a gradual build up of heat that can manifest as unexpected high CPU temps
 
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The Ginger

The Ginger

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Mar 31, 2014
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If max temp is 67c.. and you're running 55c after.. How long of gaming?.. you should be fine. if you want to actually test your CPU core temps, try stress testing with a hardware monitor on, and in 2-5 hours of full load if they don't reach 67c then you should be fine for the life of the computer.. if you are really scared you can always buy a compatible CPU cooler.
 
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nukemaster

nukemaster

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they have a cooler(92mm, but should be more than a match for that cpu).

Also note that Intel's 67c limit is a tcase(temperature at the top center of the heat spreader. Not the interesting point is that is at least 10c cooler than the core) not a core so the actual core would still be fine at least to 77c(clearly you WANT to avoid as much heat as you can). Notebook Intel cpus list the thermal junction temperature(Actual core) and have it rated much higher.
 
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Obie146

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So I am reading the TJMax temperature? How do I monitor the Tcase temperature as well? Can you recommend a good tempurature application? I heard if the Tcase temperature is exceeded it still damages the chip and melts the paste. Intel states"Tcase Max is the maximum temperature that the Tcase sensor should reach." Doesn't this mean that even if Tcase temp is exceeded, permanent damage can still be done?
 
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nukemaster

nukemaster

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The thermal paste will take any heat the cpu makes. The cpu will NOT be damaged it is deigned to clock down and shut off if it can not stay cool.

Closest thing would be the motherboard sensor for cpu(most makers have a software package, but you do not need it as the difference from TJ(Thermal Junction or Core. TJmax is the hottest it can be before shut down) and Tcase(top center of heat spreader) should stay the same for the most part. Most times it is about 10c, either way, try to aim for under 80(under 70 would be better) and you will be fine.

I am almost sure the stock cooler let the cpu get into the 70's anyway.
 
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The Ginger

The Ginger

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I stopped reading at "6 fans including...." hah, missed the heat sink.

You cannot actually monitor Tcase Temp, without drilling into your heatsink and putting in a sensor.. (or getting one that has a sensor) =\

I would agree with nukemaster and say as long as you don't go over 77c you should be fine.
 
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Obie146

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Dec 4, 2013
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If you have a temp monitor, could you possible provide a screenshot? What CPU temperature monitor would you recommend?
 
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