CPU temperature may be too hot

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comanzo

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Jun 18, 2016
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Hey guys,

So I was recently gaming and out of curiosity, looked at my temperatures for my system. My 1070 was running at 70 degrees Celsius which is fine. However, my i7 4790s was running in the high 60's and occasionally into the low 70's. Now, according to intel's website, the TCase max temperature is 71.35 degrees Celsius. Am I overheating my cpu? I am using a stock cooler for my cpu which I thought was fine since no overclocking will be done on this cpu anyway, however, this information is now getting me worried. Should I be worried? Thanks in advance.
 
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CompuTronix
comanzo,

The information that was linked above by mattbar from 2014 is not accurate. The thermal gradient between Tcase (CPU temperature) and Tjunction (Core temperature) is not 10C, it's 5C.

There's a Sticky at the top of this Forum that you should read: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

The answers to you questions are all in there, and much more. If you focus on Sections 1, and 3 through 8 you'll understand how it all works.

Regardless, users often get stuck on Intel's Tcase Thermal Specification. Whatever the Tcase specification is for a particular processor, adding 5C gives you the corresponding Junction (Core) temperature.

However, it's...
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comanzo

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How would I tell if my cpu is thermal throttling or not? At first, I was thinking cpu utilization, but that wouldn't work as not all games utilize the cpu completely.
 
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comanzo

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thanks for the quick reply. Do you think I can get away with stock cooler since no overclocking will be done on this cpu?
 
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WildCard999

WildCard999

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The stock cooler is fine, just make sure its dust free. You could spend under $35 though and get a great budget CPU cooler that would not only keep it a bit cooler but should run much quieter then the stock fan if noise is a issue.
 
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comanzo

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Ok. Would you agree with mattbar on the statement of TCase running 10 degrees cooler than the core needs to be? For instance, instead of the cores needing to be 71.35 degrees, it only needs to be 81.35 degrees. In other words, what is the highest safe temperature that is under load, for long periods of time, without shortening the life span of the cpu? What temperatures should I start to get worried if the 70's are fine? Thanks for your input so far, I appreciate it.
 
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CompuTronix

CompuTronix

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comanzo,

The information that was linked above by mattbar from 2014 is not accurate. The thermal gradient between Tcase (CPU temperature) and Tjunction (Core temperature) is not 10C, it's 5C.

There's a Sticky at the top of this Forum that you should read: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

The answers to you questions are all in there, and much more. If you focus on Sections 1, and 3 through 8 you'll understand how it all works.

Regardless, users often get stuck on Intel's Tcase Thermal Specification. Whatever the Tcase specification is for a particular processor, adding 5C gives you the corresponding Junction (Core) temperature.

However, it's still not quite so straight forward as Intel would like you to believe, because the Tcase specification is based on a calculation of the processor's Thermal Design Power (TDP) AND the TDP of the stock cooler ... so Tcase is a highly subjective figure.

Here's why:

We all know that when users replace their stock cooler with a more thermally capable higher TDP aftermarket cooler, Core temperatures drop, so it's obvious that the temperature at the Tcase test point, which is a factory only measurement, would also drop. Does this mean that since the processor would then test at a lower Tcase value, that it has somehow become thermally less capable? Of course not!

Your 65 Watt TDP Hasswell i7 4790S with a Tcase of 71C is no less thermally capable than the 88 Watt Devil's Canyon i7 4790K with a Tcase of 74C ... and Tcase +5 = Tjunction (Core temperature).

Here's the recommended operating range for Core temperature:

80C Hot (100% Load)
75C Warm
70C Warm (Heavy Load)
60C Norm
50C Norm (Medium Load)
40C Norm
30C Cool (Idle)
25C Cool

Core temperatures in the mid 70's are safe, so just keep it under 80 and you'll be fine.

Guys,

Please read the Stickies!

Thanks,

CT :sol:
 
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comanzo

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Jun 18, 2016
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Thanks guys. I appreciate the help with my cpu issue. Now, I know that this last question is outside the scope of this thread, and I do apologize for that, but I think it would be best if it can be answered here rather than creating a whole new thread for only one question. That question is, for the 1070ftw, what would you say the highest safe temperature under sustained load would be? If that can be answered here instead of creating a new thread, that would be much appreciated. Thanks.
 
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CompuTronix

CompuTronix

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CPU and GPU silicon and circuit microarchitecture are very similar, so the scale I posted above still applies. As some recent GPU's begin to limit boost frequency and performance in the low 80's, it's a good rule of thumb to just keep your silicon under 80C. This can be accomplish by tweaking the fan curve on your EVGA GTX 1070 FTW with EVGA PrecisionX OC.

CT :sol:
 
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