my i7 4790k going up to 95C at 100% load using Prime95

[Goobus]

Hello,

I'm a first time builder and I only just finished building my PC last night. I ran core temp and prime95 this morning and notice my temps are going up to 95 degree celsius. I am using a Noctua NH-D14 heatsink as well. I havent done any overclocking at all, but I did activate XMP profile in my BIOS. Is there any solution to this? I even reapplied my thermal paste and did a spread method like the NEWEGG guy suggested in his video. My first thermal paste method was the peasize dot in the middle.

Any help would be greatly appreciated.

Cheers

 

[clutchc]

Apparently, you don't have the cooler mounted correctly. And the pea-sized (or smaller) dab in the middle of a clean CPU heat spreader is fine.
But this is probably better:

 

[Goobus]

I just tried out that spread method. still no luck. The CPU frequency in Core Temp shows 4396 Mhz while using prime95 in blend mode 100%. Would that be a reason why its going so high in temps?

 

[CompuTronix]

The CPU frequency in Core Temp shows 4396 Mhz while using prime95 in blend mode 100%. Would that be a reason why its going so high in temps?

Which version of Prime95?

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

Core i 2nd, 3rd and 4th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.5, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces extremely high temperatures. The FPU test in the stability testing utility AIDA64 shows similar results.

Prime95 v26.6 produces temperatures on 3rd and 4th 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 35% 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 designed specifically for Intel processors: Real Temp - http://www.techpowerup.com/downloads/2089/real-temp-3-70/

Your Core temperatures will test 20C lower with v26.6 than with v28.5.

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

Thanks,

CT

 

[nikoli707]

^ and report back.

 

[Goobus]

Here's my temps after using your method CompuTronix. Although I did play around with the cpu clock speed and voltage a bit as well. Brought it down a bit. Are the min and max temps ok?

 

[CompuTronix]

Before I can give you a definitive answer, what is your ambient temperature?

 

[Goobus]

My room temperature is around 30 Degree Celsius atm and temps are around the same as above.

 

[CompuTronix]

You must be located in a warm climate. 30C is 86F, which is relatively warm. If those are your Core temperatures above at such a high ambient temperature, then you're doing great.

Remember that Standard Ambient temperature is 22C, which is normal room temperature, and is a reference value for Intel’s Thermal Specifications.

If your ambient temperature was at 22C, then your Core temperatures would be 8C lower.

Knowing your Ambient temperature is always important because Ambient directly affects all computer temperatures.

Here's the temperature conversions and a short scale:

Cx9/5+32=F ... or ... F-32/9x5=C ... or more simply ... an increase of 1C = an increase of 1.8F

30.0C = 86.0F Hot
29.0C = 84.2F
28.0C = 82.4F
27.0C = 80.6F
26.0C = 78.8F Warm
25.0C = 77.0F
24.0C = 75.2F
23.0C = 73.4F
22.0C = 71.6F Standard ... or ... 22.2C = 72.0F
21.0C = 69.8F
20.0C = 68.0F
19.0C = 66.2F
18.0C = 64.4F Cool

With conventional air or liquid cooling, no temperatures can be less than or equal to Ambient.

As Ambient temperature increases, thermal headroom and overclocking potential decreases.

CT

 

[Goobus]

Cheeers CompuTronix. Yea I live in Australia and its quite warm here. Thanks for all the help everyone ^_^.