i7 4790K High temperatures! Help

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Gio1897

Gio1897

Commendable
Aug 18, 2016
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I tried Prime95 on my 4790k and temperatures were VERY high. I had to go back to stock clocks to even pass the test without crashing.
So during benchmark the cpu reached 87c It was usually 83-87c I terminated the test as soon as it got to 87c. I use Corsair H100i cooler and high airflow case the Corsair Air 540.
Is this temperature normal?
Other tests like Cinebench R15 only reached 65c! 3Dmark cpu tests reach 63c and Intel test reaches 73C.
Is this something about Prime95 or is something wrong with my cooler? I never had any issues with stability but Prime95 always crashes with any OC on my cpu, while nothing else crashes. ever.
 
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CompuTronix
Gio1897,

Welcome to Tom's!

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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Gio1897,

Welcome to Tom's!

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 Core Temp to measure your temperatures - http://www.alcpu.com/CoreTemp

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

Please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Thanks,

CT :sol:
 
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