I7-4790K Prime95 Stress Test High Temps

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Vold316

Honorable
Oct 3, 2012
13
0
10,510
Hello Guys,

Please help me out here.

Out of curiousity, I ran a test to check if everything was fine.

I did a short FFTs that run for 10 minutes without looking at the temperatures, when I turned CoreTemps on (after 10 minutes, when 6 tests had passed), the core temps were at ~100ºC, so I stopped it immediatelly. There were 0 warnings and 0 errors.

So, then I did another short FFTs with PRIME95, while looking at speedfan, CPU-Z and CoreTemps. I took 6 images before deciding to stop the test.

Test conditions:
Room Temp: 20 C
Case Open.

PC SPECS:
MB: ASUS Z97-A-USB31 Rev. 1.xx
CPU: Intel Core i7 4790K
CPU Cooler: Stock.
GPU: EVGA Nvidia GTX 970
RAM 2 x 8 GB Kingston HyperX 1600 Mhz
PSU: SeaSonic M12II-750 EVO
Case: Thermaltake Chaser A41

Not Overclocked.

Here are the ScreenShots:

Before Starting the Test
Testing 1
Testing 2
Testing 3
Stopped
Final Image

As you can see, the core temps reached the 100ºC, but the CPU temp didn't reach the 60ºC.

I have no idea what is going on.

Thanks for the help.

Cheers.

Edit: added some info (not OC, stock fan), edited images (originally I uploaded the wrong ones).
 
Solution
G
What did you expect? If need be it throttles once it reaches 100°C and that's absolutely normal with P95 28.5 or newer. You should use Intel XTU to monitor it as it can display throttling percentage, etc. If you plan on running that stress test on a regular basis, then you should consider a better cooler.
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GhislainG

Titan
Jul 16, 2008
23,962
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What did you expect? If need be it throttles once it reaches 100°C and that's absolutely normal with P95 28.5 or newer. You should use Intel XTU to monitor it as it can display throttling percentage, etc. If you plan on running that stress test on a regular basis, then you should consider a better cooler.
 
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Solution
synphul

synphul

Champion
Mar 11, 2011
9,477
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54,965
P95 is a pretty strenuous test to begin with (which is why it's a pretty decent test for thermals). Make sure you're using version 26.6 and it's a good idea to keep an eye on temps whenever running any sort of stress/torture test whether it's prime95, intel burn test, rog realbench or anything else.

Those type of tests are typically used to make sure that an aftermarket cooler is handling an overclock since it's going out of bounds on the specs. Real programs don't typically stress the cpu as hard. It wouldn't be unusual to get up to 75/80c on p95 and only reach around 65-70c while gaming. The stock cooler may have trouble keeping up with p95. If you're still not happy with your temps then consider an aftermarket cooler for better temps and lower noise (larger air coolers don't have to work as hard as the stock cooler to keep the cpu cool).

http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html
 
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