New CPU cooler = higher temps

[Terryv]

I just received and installed a new NH-C14S to replace my 212 Evo

 

At 1.32v my evo topped out around 80C during Aida FPU stress test

 

My new Noctua cooler is hovering around 95C under identical conditions.

 

I've double checked everything and tried reseating several times to no difference.

 

Am I forgetting something? Please help!

 

I'm running a delided 4790k

[GOTSpectrum]

So you have enough clamping force? And what TIM are you using?

[Terryv]

4 minutes ago, huilun02 said:

Fan speed and direction?

Blowing down towards motherboard

4 minutes ago, Ben Quigley said:

So you have enough clamping force? And what TIM are you using?

I'm tightening as mush as allowed by the mount without using excessive force.

 

Using Noctua NT-H1 (even from the same tube I used on the Evo)

[GOTSpectrum]

Just now, Terryv said:

Blowing down towards motherboard

I'm tightening as mush as allowed by the mount without using excessive force.

 

Using Noctua NT-H1 (even from the same tube I used on the Evo)

Have you used enough TIM? I know these are stupid basic questions but need to be asked.

[Terryv]

1 minute ago, Ben Quigley said:

Have you used enough TIM? I know these are stupid basic questions but need to be asked.

I use the same amount as usual. About the size of a rice grain.

 

When pulling the cooler off, it has great spread across the IHS.

[Terryv]

3 minutes ago, Ben Quigley said:

Have you used enough TIM? I know these are stupid basic questions but need to be asked.

Might be a bit to much TIM, this was from my 3rd application. Thinking I was putty ng too little.

[GOTSpectrum]

3 minutes ago, Terryv said:

I use the same amount as usual. About the size of a rice grain.

 

When pulling the cooler off, it has great spread across the IHS.

After having a little peep online it seems the 212 evolution has a higher TDP than the noctua. On your socket the Noctua is only rate for 95w while the evo is rated at 120w. It seems it's just a limitation of the design.

Your cpu is 88w at standard, with 1.32v your probably pushing close to 100w if not more.

[Santo22]

fan curve could be different? also takes a little bit usually for paste to set in. I have found usually after a fresh install it takes about 10-15 minutes before temps come down a few degrees, but yours are pretty high. Have you tried to reinstall evo and see if it's still the same as it was? 

[Terryv]

Quote

After having a little peep online it seems the 212 evolution has a higher TDP than the noctua. On your socket the Noctua is only rate for 95w while the evo is rated at 120w. It seems it's just a limitation of the design.

 

Seriously? Reviews on the C14S shows it performs near D14 levels.

[Terryv]

1 minute ago, Santo22 said:

fan curve could be different? also takes a little bit usually for paste to set in. I have found usually after a fresh install it takes about 10-15 minutes before temps come down a few degrees, but yours are pretty high. Have you tried to reinstall evo and see if it's still the same as it was? 

Not yet, I'll be doing that after lunch.

[GOTSpectrum]

1 minute ago, Terryv said:

Seriously? Reviews on the C14S shows it performs near D14 levels.

From my looking into it it seems that way. The Noctua has a TDP of 140 watts on 2011 based systems but only 95 watts on 115x systems.

[Terryv]

5 minutes ago, huilun02 said:

The motherboard is not the exhaust port.

The motherboard is where the CPU is 

You trying to return the heat to the CPU?

This is the problem with this design of coolers - the air is either blown against the side panel or back onto the mobo

You see benchmarks how well they perform right? on an open air testbench perhaps

 

Also worry about too much/little paste?

 

 

I was looking to cool the VRM's by blowing down on the motherboard. I'll try reversing the fan, but I don't think it will make enough of a different.

[strat guy]

1 hour ago, Terryv said:

I just received and installed a new NH-C14S to replace my 212 Evo

 

At 1.32v my evo topped out around 80C during Aida FPU stress test

 

My new Noctua cooler is hovering around 95C under identical conditions.

 

I've double checked everything and tried reseating several times to no difference.

 

Am I forgetting something? Please help!

 

I'm running a delided 4790k

Under what conditions specifically are you seeing those high temps ? For eg, stress testing with Prime95 versions after 26.6 (with AVX) will generate a lot more heat and you probably need liquid at that stage.

[Terryv]

1 minute ago, strat guy said:

Under what conditions specifically are you seeing those high temps ? For eg, stress testing with Prime95 versions after 26.6 (with AVX) will generate a lot more heat and you probably need liquid at that stage.

Using Aida 64 cpu/cache/FPU/memory stress

 

The same as I did for my evo

[strat guy]

1 minute ago, Terryv said:

Using Aida 64 cpu/cache/FPU/memory stress

 

The same as I did for my evo

Just eyebaling a few pics of it and the Noctua cooler looks like its smaller than the 212, is it ? if so, maybe the Evo outperforms it ?

 

Also, these stress tests are artificial and no real world task, gaming, rendering etc wil ever push that much heat so you're probably ok till you TJ max and throttle.

 

I'd be worried if my gaming (or any other regular real world application) tasks were pushing that much heat.

[Terryv]

49 minutes ago, Ben Quigley said:

From my looking into it it seems that way. The Noctua has a TDP of 140 watts on 2011 based systems but only 95 watts on 115x systems.

I've confirmed what I believed on AnandTech

 

This should be 8-10 degrees cooler than the oevo on loads of 150w+

[Terryv]

Just now, strat guy said:

Just eyebaling a few pics of it and the Noctua cooler looks like its smaller than the 212, is it ? if so, maybe the Evo outperforms it ?

 

Also, these stress tests are artificial and no real world task, gaming, rendering etc wil ever push that much heat so you're probably ok till you TJ max and throttle.

 

I'd be worried if my gaming (or any other regular real world application) tasks were pushing that much heat.

The Noctua is actually about twice the size and has 3 extra heatpipes.

 

Most review sites rate it near nhd14 performance

[GOTSpectrum]

13 minutes ago, Terryv said:

I've confirmed what I believed on AnandTech

 

This should be 8-10 degrees cooler than the oevo on loads of 150w+

Well the information I have is directly from the Noctua website. So I know my Noctua information is correct. And I honestly believe you're putting out 100+ watts so you're cooler is underspecified either way regardless of the comparison to the 212.

[strat guy]

11 minutes ago, Terryv said:

The Noctua is actually about twice the size and has 3 extra heatpipes.

 

Most review sites rate it near nhd14 performance

Hmm, indentical fan curves, are the cooler and the fan seated correctly ? Same version of AIDA64, no new settings accidentally enabled etc ?

 

Apart from the cooler, can you think of any other variables that may have changed after testing with the 212 ?

 

 

 

[Terryv]

1 hour ago, strat guy said:

Hmm, indentical fan curves, are the cooler and the fan seated correctly ? Same version of AIDA64, no new settings accidentally enabled etc ?

 

Apart from the cooler, can you think of any other variables that may have changed after testing with the 212 ?

 

 

 

All of those variables were the same. The testing on the 212 evo were only a few days old. I wanted fresh numbers for comparison.

[maartendc]

It is possible that the fan on the noctua is optimized for silence, versus the fan on the 212 Evo ramping up faster, resulting in lower temps.

 

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EDIT: Wait a minute, I thought we were talking about a similar design of cooler. The NH-C14S  is a top-flow cooler, while the 212 Evo is a tower cooler.

 

Most likely the NH-C14S is recirculating hot air around the CPU, resulting in poorer airflow and higher stress test temps (even though the cooler might be better in theory).

 

3 hours ago, Terryv said:

 

Seriously? Reviews on the C14S shows it performs near D14 levels.

yes, on an open-air test bench, that might be the case. But if it recirculates hot air in a closed case, it will perform worse.

 

The 212 evo likely exausts towards the back of the case, being more efficient at getting rid of the hot air.

[Terryv]

Looks like I solved my problem. I took everything apart, even reapplied TIM for my delid, put everything back together and it works great now