Intel i7 4790k Temps question.

[Matty922117]

Hi, i just built my new PC, it has a i7 4790k cooled by a Noctua NH-D15 in a Corsair 450D case with good airflow. I know there are a lot of questions about this processor's temps, but i wanted to know if these where ok.

Temps taken with RealTemp 3.70

Room Temp: from 13 to 17 degrees celcius

IDLE: CPU Temps: around 20 to 22 degrees celsius.
(normally they are lower, these are the idle temps after 2 hours of use)

LOAD: Temps at 4.3GHz-4.4GHz (Turbo Boost) between 25 and 35 degrees celsius. When i'm playing a game there can be peeks up to 45 degrees celsius once in a wile but they mostly stay below 40.

Are there temps ok?

Another thing, i downloaded Open Hardware Monitor and it said that one core temps was stuck at 105 degrees celsius..... i ignored it even because i would expect the CPU to shut its self off because of TJmax, and the Motherboard BIOS says the CPU temp at idle is 20c°.

Thanks for the Help.

 

[Sandstorm3000]

These temps are more than ok, yours can go up to 73 degrees. Source below

http://www.game-debate.com/hardware/index.php?pid=2103&cpu=Core%20i7-4790K%204-Core%204.0GHz

Edit: I also use HW monitor to monitor my temps, weird that is displaying a wrong temp..

 

[chrisb99]

are you serious that are amazing temps mine at idle is 25-35 while load it gets up to 60-70 celsius

 

[Matty922117]

are you serious that are amazing temps mine at idle is 25-35 while load it gets up to 60-70 celsius

OK, good to know, lets hope they are the real temps and its not some bug lol, something else: is it normal for the CPU to go to 4.4GHz with Turbo Boost when I'm just dowloading a game from Origin? It seems strange that the application needs so much processing power....

 

[Sandstorm3000]

are you serious that are amazing temps mine at idle is 25-35 while load it gets up to 60-70 celsius

OK, good to know, lets hope they are the real temps and its not some bug lol, something else: is it normal for the CPU to go to 4.4GHz with Turbo Boost when I'm just dowloading a game from Origin? It seems strange that the application needs so much processing power....

Seems to me that it isn't required but i wouldn't worry about it if it stays within these temps and the CPU load isn't unusually high i wouldn't care

 

[CompuTronix]

Guys,

There are some important considerations here that are being overlooked.

Standard Ambient is 22C, which is normal room temperature. 13 to 17C is a wide range, which is 55.4F to 62.6F.

Matty922117,

Is it really that cold in your room? What happens during the summer months?

Keep in mind that Intel's Thermal Specification is based on 22C Standard Ambient, so for example if you tested at 15C ambient, which is 7C below Standard, then we have to add that 7C to your Core temperatures in order to have a valid result.

That would make your Core temperatures at idle 27 to 29C, which is perfectly normal.

Regarding load temperatures and thermal testing basics:

We all remember science class where one of the guiding principles for conducting a controlled experiment, is that it's critical to follow the same procedure every time. This eliminates variables so results will be consistent and repeatable.

Since everyone tests their rigs using X stress software at Y Ambient temperatures with Z measuring utilities resulting in CPU or Package or Core temperatures, it's impossible to compare apples to apples. This is why processor temperatures are so confusing.

There are only three relevant values; Ambient, steady-state 100% workload, and dead idle. Applications and games are partial workloads with fluctuating temperatures, which are unsuitable for thermal testing or accurate temperature comparisons.

Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html Do not use a later version.

Run only Small FFT’s for 10 minutes.

This test will give us a proper thermal benchmark at a steady-state 100% workload. Whatever your ambient temperature is at the time of testing, remember to correct your results as I explained above.

Also, Real Temp reads Core temperature, not CPU temperature. These are not interchangeable terms.

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 the i7 4790K is 74C. Tcase + 5 makes the corresponding Core temperature 79C.

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

In order to get a clear perspective of processor temperatures, please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Let us know what your results are from Prime95 v26.6 Small FFT's,

CT

 

[Matty922117]

Guys,

There are some important considerations here that are being overlooked.

Standard Ambient is 22C, which is normal room temperature. 13 to 17C is a wide range, which is 55.4F to 62.6F.

Matty922117,

Is it really that cold in your room? What happens during the summer months?

Keep in mind that Intel's Thermal Specification is based on 22C Standard Ambient, so for example if you tested at 15C ambient, which is 7C below Standard, then we have to add that 7C to your Core temperatures in order to have a valid result.

That would make your Core temperatures at idle 27 to 29C, which is perfectly normal.

Regarding load temperatures and thermal testing basics:

We all remember science class where one of the guiding principles for conducting a controlled experiment, is that it's critical to follow the same procedure every time. This eliminates variables so results will be consistent and repeatable.

Since everyone tests their rigs using X stress software at Y Ambient temperatures with Z measuring utilities resulting in CPU or Package or Core temperatures, it's impossible to compare apples to apples. This is why processor temperatures are so confusing.

There are only three relevant values; Ambient, steady-state 100% workload, and dead idle. Applications and games are partial workloads with fluctuating temperatures, which are unsuitable for thermal testing or accurate temperature comparisons.

Please download Prime95 version 26.6 - http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html Do not use a later version.

Run only Small FFT’s for 10 minutes.

This test will give us a proper thermal benchmark at a steady-state 100% workload. Whatever your ambient temperature is at the time of testing, remember to correct your results as I explained above.

Also, Real Temp reads Core temperature, not CPU temperature. These are not interchangeable terms.

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 the i7 4790K is 74C. Tcase + 5 makes the corresponding Core temperature 79C.

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

In order to get a clear perspective of processor temperatures, please read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Let us know what your results are from Prime95 v26.6 Small FFT's,

CT

Ok, I'll download prime95 tomorrow and then give more detailed info.
Does prime95 give the cpu temp average at the end? Why shouldn't I download a later version? And what do you think of that issue with HW temps? If the core temps where at 20-22 degrees Celsius I can't imagine the cpu would run at 105c.....

Ps. In my benchmark I will give:
1- Testing conditions: clock speed, running applications, ambient temperature ecc.
2- CPU temp (each core and then cpu) at IDLE with effective temp and then adjusted temperature as if it was running in a 22c environment.
3- CPU temp at full LOAD with (again) effective temp and then adjusted temperature......

Enough info for a answer?

Thanks

 

[CompuTronix]

And what do you think of that issue with HW temps? If the core temps where at 20-22 degrees Celsius I can't imagine the cpu would run at 105c.....

Excuse me? Where does this come from?

 

[Matty922117]

And what do you think of that issue with HW temps? If the core temps where at 20-22 degrees Celsius I can't imagine the cpu would run at 105c.....

Excuse me? Where does this come from?

Open Hardware Monitor

 

[CompuTronix]

I'm not following you ... please explain.

 

[Sandstorm3000]

I'm not following you ... please explain.

Its a monitoring tool for monitoring your hardware. You can see all the available temperatures, fan speeds and voltages.
http://zapp5.staticworld.net/downloads/graphics/screenshots/201094f.jpg
Here you have a random example from the internet.

 

[CompuTronix]

Sandstorm3000,

Thank you, but as the author of the Intel Temperature Guide, I test every utility that I can find, so I know what Open Hardware Monitor is and does, which is similar to HWMonitor.

I am questioning as to what Matty922117 is referring.

 

[Sandstorm3000]

Sandstorm3000,

Thank you, but as the author of the Intel Temperature Guide, I test every utility that I can find, so I know what Open Hardware Monitor is and does, which is similar to HWMonitor.

I am questioning to what Matty922117 is referring.

Oh okay,

 

[CompuTronix]

No problem.

 

[RyleeCurrie6]

Sandstorm3000,

Thank you, but as the author of the Intel Temperature Guide, I test every utility that I can find, so I know what Open Hardware Monitor is and does, which is similar to HWMonitor.

I am questioning to what Matty922117 is referring.

Oh okay,

He's reffering to his first post where he explains his temps saying 105c. Also I have a 4790k, currently stock, sitting in 19c ambient with a corsair h110 pulling from the rad and exhausting out the case, with prime95 running (the version you specified) I hit 52c in 1 core and 50c average at it's highest. But earlier i was running the newest version and as soon as i started it my core temps all jumped to 80c. Instantly I started searching and found this thread, also i tryed the other prime again right after and hit 58c highest, Could that have just been a glitch?

 

[CompuTronix]

RyleeCurrie6,

First, good catch. I missed the OP's first post about 105C. He was right to ignore that reading.

Second, no, that's not a glitch. 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 unrealistically high temperatures. The FPU test in the software utility AIDA64 shows the same 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 read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Thanks,

CT

 

[RyleeCurrie6]

RyleeCurrie6,

First, good catch. I missed the OP's first post about 105C. He was right to ignore that reading.

Second, no, that's not a glitch. 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 unrealistically high temperatures. The FPU test in the software utility AIDA64 shows the same 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 read this Tom’s Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Thanks,

CT

Thank you very much for the quick response much appreciated, AndI'll go read up now Justa quick question, What do you personally think of my temps with that cooler?

 

[CompuTronix]

I can't say.

Was that Blend or Small FFT's?

What is your ambient temperature?

Here's the thing:

We live in a world of Standards and Specifications, so you always need to be very specific. There are far too many variables, so without complete and specific information, it's all speculation and conjecture.

The reason why there are so many conflicting reports of different temperatures, is that everyone tests their rigs with different stress tests, clock speeds, Vcore, coolers, ambient temperatures and measuring utilities that read two different types of processor temperatures.

Add to that the fact that almost no one bothers to look up Intel's specs, which aren't written to make any sense to anyone anyway. Then there's the term "load" that gets tossed around like gorilla poo in a cage. Load? Which load? What load? Load is a very subjective term.

Applications, rendering, encoding and gaming are partial workloads with fluctuating temperatures, and aren't suitable for thermal testing or temperature comparisons, but they're great for endless debate. Add a graphics card that recirculates heat into your case, and your perspective is lost among all the variables.

The only way to make sense of this mess is to test your rig using a methodology that reduces the variables to the lowest common denominators. The Intel Temp Guide explains how to do it in Section 12 ... yet as the saying goes, you can lead a horse to water, but you can't push a rope.

CT

 

[RyleeCurrie6]

I can't say.

Was that Blend or Small FFT's?

What is your ambient temperature?

Here's the thing:

We live in a world of Standards and Specifications, so you always need to be very specific. There are far too many variables, so without complete and specific information, it's all speculation and conjecture.

The reason why there are so many conflicting reports of different temperatures, is that everyone tests their rigs with different stress tests, clock speeds, Vcore, coolers, ambient temperatures and measuring utilities that read two different types of processor temperatures.

Add to that the fact that almost no one bothers to look up Intel's specs, which aren't written to make any sense to anyone anyway. Then there's the term "load" that gets tossed around like gorilla poo in a cage. Load? Which load? What load? Load is a very subjective term.

Applications, rendering, encoding and gaming are partial workloads with fluctuating temperatures, and aren't suitable for thermal testing or comparing temperatures, but they're great for endless debate. Add a graphics card that recirculates heat into your case, and your perspective is lost among all the variables.

The only way to make sense of this mess is to test your rig using a methodology that reduces the variables to the lowest common denominators. The Intel Temp Guide explains how to do it in Section 12 ... yet as the saying goes, you can lead a horse to water, but you can't push a rope.

CT

Sorry for not being specific, I did small FFT's, also I don't have a gpu adding any heat. Also the case in in the open with the sidepanel open. And ambient is roughly 18c.

 

[CompuTronix]

Please, what is your ambient temperature?

 

[RyleeCurrie6]

Please, what is your ambient temperature?

18c

 

[CompuTronix]

Please read my first post, particularly the first few paragraphs.

 

[Matty922117]

Please read my first post, particularly the first few paragraphs.

ok, don't know why my pc decided to choose as solution your question, lol, but going back to what i wrote before, can you answer my questions on prime95 ecc. please?

 

[CompuTronix]

Does prime95 give the cpu temp average at the end?

No. Prime95 does not include monitoring. I recommend Real Temp, which was designed for Intel processors.

Why shouldn't I download a later version?

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 unrealistically high temperatures. The FPU test in the software utility AIDA64 shows the same 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.

And what do you think of that issue with HW temps? If the core temps where at 20-22 degrees Celsius I can't imagine the cpu would run at 105c.....

That could be a faulty sensor. Check it with Real Temp.

CT