4790k Temps with 212 Evo

[Kritya]

So, as I haven't found anything concrete regarding whether this chip is just a fairly hot chip or not, I feel the need to ask here.

The mobo is an Asus Maximus VI Hero C2, CPU is 4790k, cooler is a hyper 212 evo with the compound being IC Diamond.

The idle temps of the cores is about 40c which I felt was a bit high, however when using heavy load to stress the cpu the temps went to 60-65 range without turbo and 75-80 range with turbo. Without turbo is 4GHz, with is 4.4GHz.

Are these temps normal? I know the CPU should be fine at any of these temps, however my 4670k at 3.4GHz with a similar setup runs at 32c on idle, is this temp difference sheerly due to the difference in power of the CPUs? And are the load temps fine as well?

 

[iamlegend]

Devil canyon are hot, very hot.

However, the Idle and load temps are a little bit high.

Scan your system for Malware or virus.

 

[Kritya]

Devil canyon are hot, very hot.

However, the Idle and load temps are a little bit high.

Scan your system for Malware or virus.

The system was just built and these were checked before even connecting to the net (I have the programs on a flash drive). So I don't believe it's Malware related.

 

[iamlegend]

So check the Airflow, thermalpaste, fans and other obstructions.

 

[Vici0us]

Haswell chips are hot, make sure cooler is mounted properly, reapply thermal paste.

 

[Kritya]

Ok, to clarify, I know what to do if temps are too hot, however that was not the question asked. Dup to lack of experience with this processor I wanted to know if these temps are too hot, 60c under load with 40c at idle. should I assume from the fact that the responses have all been ways to lower temps that these temps are indeed too hot?

 

[TofuLion]

i have a stock cooler on 4790k, and my CPU right now, at idle, is 32 C. for contrast, my gpu is at 27 C, both are idle. under load (using handbrake) temps reach the low 80s. so i would say your idle temp is high, which would also mean your load temps would be high. so there's either something wrong with the way you assembled it (always make sure), or the chip is broken.

 

[Kritya]

Ok thank you for the reference, I'm gonna reapply thermal paste and redo the cooler.

 

[CompuTronix]

Ok, to clarify, I know what to do if temps are too hot, however that was not the question asked. Dup to lack of experience with this processor I wanted to know if these temps are too hot, 60c under load with 40c at idle. should I assume from the fact that the responses have all been ways to lower temps that these temps are indeed too hot?

Kritya,

Let's put this into perspective.

Before we examine your idle temperatures, let's take a look at your load temperatures, which are far more important.

Intel desktop processors have thermal sensors for each Core, plus a sensor for the entire processor, so a Quad Core has five sensors. Heat originates within the Cores where Digital sensors measure Core temperatures. A single Analog sensor under the Cores measures overall CPU temperature.

Core temperature is 5C higher than CPU temperature due to sensor location. Intel's Thermal Specification is "Tcase", which is CPU temperature, not Core Temperature. Tcase for your i7 4790K is 74C: http://ark.intel.com/products/80807/Intel-Core-i7-4790K-Processor-8M-Cache-up-to-4_40-GHz

Tcase + 5 makes the corresponding Core temperature 79C. <-- This is your spec.

The relationship between Core temperature and CPU temperature is not in the Thermal Specifications; it's only found in a few engineering documents.

The relationships between Ambient temperature, CPU temperatures, Core temperatures and Throttle temperatures are shown below for the i7 4790K. All values are based on Intel documentation.

4th Generation 22 Nanometer: 4790K (TDP 88W / Idle 2W)

Standard Ambient = 22C
Tcase (CPU temp) = 74C
CPU / Core offset + 5C
Tjunction (Core temp) = 79C
Tj Max (Throttle temp) = 100C

Standard Ambient temperature is 22C, which is normal room temperature, and is the reference value for Intel’s Thermal Specifications. Knowing your Ambient temperature is important because Ambient directly affects all computer temperatures.

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.

Q What is your Ambient temperature?

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.

Q What are you using to measure temperatures?

Use only 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/

Let us know what Real Temp reports 10 minutes into the Small FFT's test.

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

Thanks,

CT

 

[Kritya]

So 79c on cores under full load is perfectly fine?

 

[CompuTronix]

Yes.

At 22C Standard Ambient, here's the typical 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)

Your highest temperatures will occur during stability tests. Temperatures are lower during real-world everyday workloads such as processor intensive applications or gaming.

CT

 

[Vici0us]

If you're worried then like I said, make sure your cooler is mounted properly and reapply some good quality thermal paste.

My Haswell chip (Intel i7 4770K) runs @ 76C (full load stress test) and idles @ 32C - 34C depending on the room temperature.

My chip is @ 4.4GHz and I am using Corsair H105 (Push - Pull) with X4 Corsair SP120mm.