Prime 95 Stress Test i7 6700k

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timwuzhere

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May 24, 2016
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I decided to do a stress test on my CPU last night, it is not overclocked so its a stock i7 6700k, I ran Prime 95 for about 10 minutes and the temperature stayed around 75c-80c, I have a Corsair H80i V2 AIO liquid cooler during the test the fans were running at 100%, I was wondering if these results are typical, or should I be worried. I have always had stock computers so I really have never messed with any of this kind of thing before, sorry for the noobish question.
 
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CompuTronix
timwuzhere,

Do NOT run any versions of Prime95 later than 26.6. Here's why:

Core i 2nd through 6th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.9, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces unrealistically high temperatures. The FPU test in the utility AIDA64 shows similar results.

Prime95 v26.6 produces temperatures on 3rd through 6th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a significantly larger Die.

Please download Prime95 version 26.6 -...
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CompuTronix

CompuTronix

Intel Master
Moderator
Nov 13, 2006
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timwuzhere,

Welcome to Tom's!

At the top of this Forum you'll see "Stickies" which are posts that are helpful Guides or references permanently available. One of them is the Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Please give it a read.

To answer your question, we'll need more information.

(1) Which version of Prime95?
(2) Which torture test?
(3) What is your ambient temperature?

Thanks,

CT :sol:
 
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T

timwuzhere

Commendable
May 24, 2016
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1,510


I was running version 28.9, I did a balanced torture test, and the temperature of my room is about 25C

 
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CompuTronix

CompuTronix

Intel Master
Moderator
Nov 13, 2006
6,374
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38,240
timwuzhere,

Do NOT run any versions of Prime95 later than 26.6. Here's why:

Core i 2nd through 6th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.9, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces unrealistically high temperatures. The FPU test in the utility AIDA64 shows similar results.

Prime95 v26.6 produces temperatures on 3rd through 6th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a significantly larger Die.

Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html

Run only Small FFT’s for 10 minutes.

Use Real Temp to measure your Core temperatures, as it was developed specifically for Intel processors: Real Temp - http://www.techpowerup.com/downloads/2089/real-temp-3-70/

Your Core temperatures will test 10 to 20C lower with v26.6 than with v28.9.

CT :sol:
 
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T

timwuzhere

Commendable
May 24, 2016
11
0
1,510
pmwJHYD6j


I will run that tonight and see what the results are, thank you for the info.

update: ran the test with the correct version and the load was only 24% compared to the 100% load last night which I thought was kind of odd I thought this was designed to push the processor to the limits. The temperatures never got above 75c which is a little better than last night but not by much, I wonder if I did something wrong.
 
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CompuTronix

CompuTronix

Intel Master
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Nov 13, 2006
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You didn't do anything wrong. 24% load is a false indication. Your processor was most certainly at 100% workload. You can confirm that in Task Manager under the Performance Tab.

What temperature monitoring software were you originally using? Try Core Temp RC8 - http://www.alcpu.com/CoreTemp/

CT :sol:
 
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