Dancop Shares Findings on Thermal Paste and Skylake: Thermal Grizzly Kryonaut Top Pick for Extreme Overclocking

The Dancop "ICE-Ball" effect on Skylake CPUs is the audible crack when the contact between the CPU die and IHS, and IHS and CPU pot, is lost. The loss of contact is significant for the overclocking capabilities of your processor as the thermal conductivity is reduced to the minimum. Overclockers have been struggling with the "thermal paste crack" problem for a long time, and Skylake doesn't make things easier.

As Skylake requires delidding to achieve the highest frequencies on liquid nitrogen, there are now two problem points for thermal paste (CPU-IHS and IHS-cooler). In a forum thread posted in the Skylake OC sub-forum, German overclocker and current #1 in the world, Dancop shares his findings on the ICE-Ball effect using different thermal pastes. Among the thermal pastes tested are: Innovation Cooling Diamand 7 Carat, Prolimatech PK1 and PK3, Thermal Grizzly Hydronaut and Kryonaut, Junpus DX-1, EK Ecotherm, Gelid GC-Extreme, and Noctua NH-1.

The results are spectacular. The ICE-Ball temperature under load varies between -120°C (Junpus DX-1) to -185 (Thermal Grizzly Kryonaut). That's 65°C difference for minimum load operating temperature! Check the thread for more information and detailed graph!


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Germany Dancop says:

Hey GUYS!

I did a lot of testings the last weeks...
Spent more than 150L of LN2, hopefully to help you guys, not doing the wrong TIM on your Skylake DIE ;)

My testsystem is:
[LIST]
Kingston HyperX Predator 8GB 3300C16 @ 3000C11
Intel skylake 6600K ES
Innovation Coling Diamand 7 Carat
Prolimatech PK3
Junpus DX-1
Gelid GC-Extreme
Thermal Grizzly Kryonaut
[/list]
Then I went into Windows 7 64bit with the following settings:

5200/5200 on the core/cahce

Voltages:[list]
VDIMM: 1.6V
DMI: 1.37V
PLL Termination: 1.6V
Bandwith: 6
[/list]
Temperature measured with the ASUS Batmobile (OC-Panel 2)

For each TIM I've tested it twice with de-mounting and renewing all the TIM!
Then I did two several tests. Finding the "Crack-Point" in idle and on load (Cinebench R15)!
The "Crack-Point", I call it Ice-Ball point, cause it sounds (it is truly hearable!!!) like the little Ice-Ball which you have to crack in Taiwanese menthol cigarettes, when the TIM reaches its lowest temperature, before it looses contact to the POT, IHS or DIE. For me it looks like it's a matter of bonding agent (I don't know the right expression in english! I mean the fluid, that makes the TIM more or less fluent). When this "bonding agent" gets too cold, then it starts to get hard and cracks because of the different coefficients of expansion between silicium and copper.

You can reproduce cracks when you are on heavy load and the pot is very cold and your cpu crashes. Then the silicium turns from approximately minus 20 degrees to minus 160 within a milisecond!
The copper from the pot and the IHS already has its typical size for this kind of temperature, but the silicium changes it right now, which makes it much smaller compared to the size it has while load!

The most important thing is the follwing; mount your pot as tight as it goes! At least, that's what I found out!

Now you wanna know which TIM is the best (I can only name the pastes I've tested, so if one is missing, let me know, or if you're a TIM vendor....send me!)
Here ya go:




Please guys, share your experiences...I hope we can find THE right TIM soon!!!!
Right now it is Thermal Grizzly Kryonaut!

Germany minicoopers says:

Great test. Thanks for sharing Daniel

Belgium leeghoofd says:

We had the crack way earlier than -180. Depending on clock frequency/volts we could not even surpass -145°C before we lost it.... Ourt best temp region with Grizzly was between -125°C / -145°C max. If we lost contact best to torch till -40ish and then slowly build up the clocks/temp

Germany Dancop says:

That's what I meant with....as tight as it goes With 5 rounds of the screw...136 with 10 165 with 17 ( more is not possible) 185

Canada Trouffman says:

GC-extreme and Kryonaut are way above the others :) Definetly a target product for overclockers it seems. Thanks for sharing

Germany Dancop says:

Indeed! OMG...3 people watching it within some minutes...seems to be interesting :D

India Toolius says:

Thank you soo much Daniel San :D
This is a huge help for guys like me !!

Also this i did not understand what you meant .. ??

Dancop said: That's what I meant with....as tight as it goes
With 5 rounds of the screw...136
with 10 165
with 17 ( more is not possible) 185


Is this the temps you could bench at with the amount of rotations on the screws ?

Germany Dancop says:

Exactly. ..beast mounting only

India Toolius says:

Thank you soo much :) One last question.. Did you use the springs or no need for them ? Thank you sooooo much for all the help !! :D

Germany Dancop says:

Sure...that's what I'm talking about! With the beast springs and the named rounds of the screws

Germany BenchBros says:

Thank you very much for these tests :) But what about heat transfer from DIE to HS? I mean... Do we really care about the best Temps, or the best clocks. Did you test highest clocks on fixed VCore or sth like this?

Germany Dancop says:

Yes I did...Except for PK1, Hydronaut and NH-1 They were too bad! max Clocks in R15 Kryonaut 6320 Diamant 6150 PK3 6100 DX1 6080 EK Ecotherm 6100 Gelid 6280

Chile Samsarulz says:

Great to see a round up like this since Thermal Grizzly was released some days ago ;) Would like to see more testing! Regards

Romania Bruno says:

Great findings! Thank you for sharing!

Germany Dancop says:

Welcome

Hungary Achill3uS says:

very nice effort i guess not a big surprise anymore Grizzly is the best TIM on the market!

France Wizerty says:

Dancop said: That's what I meant with....as tight as it goes
With 5 rounds of the screw...136
with 10 165
with 17 ( more is not possible) 185


Toolius said:
...
Did you use the springs or no need for them ?
...


-> 17 rounds without spring.... that's tight indeed :D

Thanks for sharing ;)

Slovenia tiborrr says:

I guess our Ectotherm does well, considering I validated it to -50°C :) Good work Daniel!

Sweden Rauf says:

How do you guys get the kryonaut to such low temps without cracking? Tried Z170 on LN2 for the first time today and got the crack at -145. This was with my Kingpin EE with supertight mount! Springs fully compressed. And they are quiet sturdy... Do you use a thin or a little thicker layer?

South Africa Vivi says:

Rauf said: How do you guys get the kryonaut to such low temps without cracking? Tried Z170 on LN2 for the first time today and got the crack at -145. This was with my Kingpin EE with supertight mount! Springs fully compressed. And they are quiet sturdy...

Do you use a thin or a little thicker layer?


depends how aggressively you pour. you have to go super slowly. if you want to go over crack point you must have 1 degree increments past the "noisy" point of the pot.
it also depends where you mount your probe and what equipment you use, maybe you are at -160 compared to other guys. So there are many factors. But for me to get no crack is very clean die and hs , then apply one line on the die, mount ihs, then one line on the ihs, mount pot with moderate settings, i dont like tight :P.

Excellent thread and work daniel, awesome!

Germany Dancop says:

Thx! Exactly Vivi! Pouring is everything! Beast is very fast, but that's exactly what the pastes don't like. Be patient...slow...not aggressive

says:

Sorry daniel....the original tim, cracks??? What was the max cb before delid??? Thanks bai

Germany Dancop says:

Around 120...

says:

Wow.....

Germany Dancop says:

Problem is, I only had original tim on my 6700k. My 6600k was delidded before I've done this test. So I thought it wouldn't fit into this test...

says:

So, on your 6700k with the original tim, you had problem under -120°.....then you change tim...right???

Germany Dancop says:

Exactly

says:

Okkkkkk....so i have to change the tim on my cpu:(( fingercross uff

South Africa Vivi says:

barbonenet said: Okkkkkk....so i have to change the tim on my cpu:(( fingercross uff


yes there is no way to test max clocks without delid

says:

The cpu can be closed forever, after change the compound??? Because i think after some cpu's remount, the die could be scratched.....

Hungary Achill3uS says:

Rauf said: How do you guys get the kryonaut to such low temps without cracking? Tried Z170 on LN2 for the first time today and got the crack at -145. This was with my Kingpin EE with supertight mount! Springs fully compressed. And they are quiet sturdy...

Do you use a thin or a little thicker layer?


dont worry bro i have same issue... maybe we pour still too fast :)

barbonenet said: The cpu can be closed forever, after change the compound??? Because i think after some cpu's remount, the die could be scratched.....


nono you have to refresh TIM after/before every session to achieve top clocks all the time

Sweden Rauf says:

Thanks for the replies guys! :)

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