Liquid metal 9700k high temperature and thermal throttling

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Vaskedama

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Mar 13, 2016
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Hello

I just got my i7 9700k and a strix z370 motherboard. I applied grizzly condoctaunant liquid metal.

Using prime 95 to testing with small FFT, the cpu temperature gets to 90 deg and then thermal throttles.

Being a first time user of LM, I find these temperatures high. My rig is air cooled with sufficient cooling and I use the Noctua NH-D15 air cooler.

Do these temperatures seem right to you folk and may more LM be warranted?

I did apply LM to both the cpu surface and the heatspreader as the instructions says, I was also careful not to apply to much LM, but the entire surface on the cpu was covered, leaving not much bubbles.

I might also add that my idle temperatures are at 38-40 deg Celsius
 
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NightHawkRMX

NightHawkRMX

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Your application was likely mostly correct, however those chips are pushing the limits of that architecture and thus run very hot. I am surprised it is throttling at 90c since the tjunction is at 100c on that chip. The 9700k doesnt seem to have the heat problems as bad as the 9900k, so there may be a lm issue. Also, dont those chips have a soldered ihs thus not needing lm? also what clocks and voltage are being applied to the chip. I know little about lm.
 
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Vaskedama

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Mar 13, 2016
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you can still use LM instead of thermal paste between the cpu and the heatspreader.

I might also add that I have overclocked it to 5 ghz with a voltage offset of +0.1v
 
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Vaskedama

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Mar 13, 2016
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I have a question though. After applying the LM, is there a window how fast I need to install the heatspreader ? If the LM is exposed to to much oxygen and air for to long can it start getting dried up and affect the heat transfer ?
 
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izoli

izoli

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Apr 29, 2011
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Oh yes using LM in place of Thermal Paste will not help much if at all and is in my opinion more of a risk from leakage. Plus is the NH-D15 bottom not aluminium? LM will corrode aluminum.

Delid is where you see the main temp gains and the 9900 is already soldered so it would take more work for minimal gain.

 
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izoli

izoli

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Okay I see it's nickel plated copper. I would still stick with thermal grizzly kryonaut though personally.
 
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The Original Ralph

The Original Ralph

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Sep 14, 2011
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here's a video where defbauer delidded a 9900k and sanded the die to remove some of the solder or thickness
- from the temps he's showing, he managed to drop temps 13-14C - but just delidding is a little hairy for me considering the solder is soldered to the IHS and then sanding down the die but it's worth watching

https://www.youtube.com/watch?v=r5Doo-zgyQs

if it helps, what vaskedama said about using LM for thermal paste, - Coolaboratory's LM products, while they were the top scoring TIM, only brought the tem down about 1C from the Thermal Grizzly Kyronaut (the highest non-LM thermal paste). There's a thread someone on here showing what the LM TIMs do to aluminum, and apparently they etch the stainless steel in the IHS as well. If i can find the link to that review (right here on TOM's, i'll come back and post

here it is https://www.tomshardware.com/reviews/thermal-paste-comparison,5108-8.html

fwiw
 
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smorizio

smorizio

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one thing before you void your warranty. check to see if the cpu lid is flat or not. jayztwocent got a new cpu chip that the lid was raised in the middle. this cause the air cooler to have less space on the cpu chip and the chip ran hot. he sanded down the lid and the temps were more inline with the older cpu chips. if the cpu chip lid is high in the middle it wont turn or spin when it on a flat table.
 
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lukasbeskow

Nov 13, 2018
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Hi,


Im on my third week with my new build, and evertything is fine:
i7 9700K
Cooler Coolermaster 212X
Gigabyte Aorus Elite Z390
16GB Ram Corsair LPX 3000 CL15
PSU Corsair H750i

On stress test with all Eigth Cores @ 4,9 GHz my temperatures never get above 82°C.
Considering the 212X is cheap, Im very happy with those results,
Just for comparison my old 7700K @ 4,4 GHz (Stock Speed) got approximately the same temperatures.




PSU Corsair
 
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