Question [SOLVED] RTX 2070 throttling after waterblock install

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Lucas Rey

Jul 11, 2022
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Hi guys, I installed 2 WC AIO on my son's pc. One for CPU (Artic Liquid Freezer II 240) CPU temp is now perfect, it doesn't reach 70 degrees even under long high load and 35 degrees on idle. And other WC AIO on GTX 2070 using Kraken G12 and Thermaltake Water 3.0 120.

I did several GPU benchmarks and everything seemed ok. The day after, my son, claims a GPU throttling during game with very poor performance. HWInfo shown GPU temp at max 65 degrees but hotspot reaches 112 degrees. I believe this is the reason but I don't understand what can be the root cause for hotspot burning.

Firstly, what is this hotspot? Is related to GPU die or any other chips like vram? Is this the reason for bad gaming performance? Other chips like vram is not covered anymore by any heatsink, for this reason I used several mini heatsinks.

Any advice?

Thank you
Lucas
 
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Hot spot is the hottest sensor off the gpu die.
A gap of 47C between core and hot spot smells of improper cooler mount - or the paste 'slid' off; some pastes do not work as well on naked die applications as well as they do on a cpu's IHS. A normal gap is in the range of 10-20C.
Either way, you're going to have to take it apart and have a look over.
 
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Thank you @Phaaze88. I used Thermal Grizzly Kryonaut but maybe something gone wrong, even because the karken g12 is not properly compatible with GTX 2070 and I had to cut the brackets and enlarge the holes on kraken itself. Strange that early benchmark doesn't shown anything wrong.
So definitely the bad performance is related to 112C on GPU die hotspot, good, at least I have a starting point.
 
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I have GIGABYTE GeForce GTX 1070 Ti 8GB WINDFORCE 8GB GV-N107TWF2-8GD
So custom PCB. But that's not a problem, as I wrote, I have cut the original brackets and on early tests everything seemed fine. Something gone wrong later 🤔
 
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Huh? You initially posted 2070, but okay.


Not feeling comfortable with the idea that you modded the kit, but if I take your word for it that it seems fine, then:
A)Kryonaut has slipped off in places, leaving exposed spots. This paste does fall in the category for 'good for cpu IHS applications, but rather meh for gpu die'.
B)Kinda goes in hand with A: the expansion and contraction of metals during the thermal cycles caused the cooler to come loose... or is the bracket? It may not show up right away, but given enough time... and well, the die is hot.
 
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Phaaze88 said:
Huh? You initially posted 2070, but okay.
Click to expand...
Wops! Sorry my bad, the VGA is the following:
https://www.bpm-power.com/it/online/componenti-pc/schede-video/scheda-nvidia-gigabyte-8gb-b1626793
Anyway, always custom PCB!

Ok, I'll remove the Kryonaut and try the Artic MX-5, just in case. And then re-install everything. It seems Artic is more "creamier" than Kryonaut.

Anyway I'm worried about vram and vrm, I used some little heatsynks:
https://imgur.com/zbkwFqB
View: https://i.imgur.com/zbkwFqB.png
I hope this is enough.
 
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I've not seen too much about MX-5. Didn't it get discontinued already?


Yeah, I picked that up from TPU's forums: https://www.techpowerup.com/forums/...-5-is-here-boys-tests-incoming.279317/page-47
Arctic dropped it due to issues with consistency... Oops!

The pastes that I know work for gpu applications are:
Noctua NT-H2(personal experience), Gelid GC Extreme, Prolimatech PK-3, Cooler Master Mastergel Pro V2, and Kingpin KPx. All thick, and quite viscous pastes, which resist the 'slipping off'.


The GDDR6 memory should be fine if you've got heatsinks and airflow. The power delivery is right under the G12's fan, so it should be cool.
 
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Phaaze88 said:
The pastes that I know work for gpu applications are:
Noctua NT-H2(personal experience), Gelid GC Extreme, Prolimatech PK-3, Cooler Master Mastergel Pro V2, and Kingpin KPx. All thick, and quite viscous pastes, which resist the 'slipping off'.
Click to expand...
personal experience : MX-4 on GPU with kraken G12 adapter + artic aio 240mm first gen, on CPU aswell...even my potato notebook liked it so much that it got higher wattage CPU replacement and works like charm :)
 
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Phaaze88 said:
Huh. I've heard mixed about that one. Was there more than one batch? I see there's a '2019 Edition'?
Click to expand...
mine is 2018, says 8year durability and im at half of that now and dont see anything weird happening yet
its this one
Genuine-Original-ARCTIC-MX-4-4g-8-5W-MK-thermal-paste-for-Overclocking-Cooling-compound-grease.jpg
 
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I've used Arctic MX-2, MX-4, Kryonaut, Thermaltake TX3? or TX2, on GPU dies, never really had problems.

MX-4 is a good all-purpose paste. Not too runny and can fill in large gaps like you see on the bottom of direct contact heatpipe coolers. Also relatively cheap.

Most AIO chill plates aren't perfectly flat, they are intended for interface with CPU heatspreaders which tend to have proud centers. So AIO tend to have a slight concavity to them. In that case I think Kyronaut is a poor choice for a GPU. Hydronaut is likely the better choice from TG, also a lot cheaper since you won't be going sub-ambient.

I'm using Kryonaut on my GPU now, but it is with a full cover water block, which is about as flat as they can make it to sit on the naked die. Getting close to a year, no issues.
 
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Eximo said:
I've used Arctic MX-2, MX-4, Kryonaut, Thermaltake TX3? or TX2, on GPU dies, never really had problems.

MX-4 is a good all-purpose paste. Not too runny and can fill in large gaps like you see on the bottom of direct contact heatpipe coolers. Also relatively cheap.

Most AIO chill plates aren't perfectly flat, they are intended for interface with CPU heatspreaders which tend to have proud centers. So AIO tend to have a slight concavity to them. In that case I think Kyronaut is a poor choice for a GPU. Hydronaut is likely the better choice from TG, also a lot cheaper since you won't be going sub-ambient.

I'm using Kryonaut on my GPU now, but it is with a full cover water block, which is about as flat as they can make it to sit on the naked die. Getting close to a year, no issues.
Click to expand...
I see. Mounting pressure and curvature with AIOs and full cover blocks, huh? /bookmarked


I take my coolers off very often, so I'll never get to see the longevity portion.
 
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Phaaze88 said:
I take my coolers off very often, so I'll never get to see the longevity portion.
Click to expand...

I have the opposite problem. I can't recall what I used to paste my GTX1080, it was like 5 years ago. Might have been the included EK paste with the GPU block, though I would have had Kyronaut around at the time. Originally used it to repaste under the lid of my 7700k, which is also still going. (Most worthwhile "dangerous" mod I have ever done)

Not having much luck locating the exact information on flatness. Pretty sure Gamer's Nexus did their usual pressure testing with various AIO and CPUs.

I might even have it backwards. It might be that CPU heatspreaders tend to be concave and the AIOs are designed to be convex. (That would make more sense from a machining perspective, since I'm certain they use lathes on Asetek style AIO) Normal heatsinks look to be planar ground. I've seen quite a few CPUs lapped, and I do know that it does vary from CPU to CPU, even in the same generation on how it will come out.
 
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The fact that your sons cpu reaches 70c at full load using an Artic Liquid Freezer II 240
is likely where the problems begin.

You seem to be about 15 C over what you are supposed to have if the cpu is a 200 watt part (it isn't) Iin my estimation above I provided a 5C delta vs what the video below shows for the 280 version of your cooler... it wouldn't be that large in real life but still, your cpu isn't being cooled correctly now neither is gpu.
View: https://www.youtube.com/watch?v=KPaSEGe6ML0


maybe you have/ the factory has attached the fans incorrectly and they are pulling air through the radiator rather than pushing it through the radiator and out of the case. make sure you mounted it correctly. Test your fans by feeling the air with your hands.

View: https://www.youtube.com/watch?v=BbGomv195sk


Sorry I can't help here with AIO, beyond videos but I dont really need to in order to see you have some problems.
 
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@spentshells, it's the VGA, not the CPU :)

However I finally solved the issue. Now HotSpot doesn't reach 75c that is maximum temp I got under high and long stress.
I used NT-H1, that I had already at home, and it seems does its job in a good way.

Problem was, as wrote by many of you, that the block doesn't touch the gpu die in a little part. This was caused by ONE of the <Mod Edit> heatsynk on VRAM. I didn't notice it before.

Thank you to partecipate to this thread.
Lucas
 
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spentshells said:
"one for CPU (Artic Liquid Freezer II 240) CPU temp is now perfect, it doesn't reach 70 degrees even under long high load and 35 degrees on idle. "

this is likely a bit better cooling performance than the stock cooler
Click to expand...
Ah ok, you're referring to this. But before, with AMD stock cooler, my son claimed CPU temp at 80/85C in game, now it's 65C under stress benchmark (I seen only one time at 68C) and maximum 55/60C in game. So, Artic do its job in a perfect way I believe, taking under consideration that temp room can reach also 30C :)
 
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