Sunday, February 10th 2019

Liquid Metal TIM Shaves 5°C Off Radeon VII Junction Temperatures

In our own testing of the Radeon VII, we found that adding washers to the GPU retention bracket to increase mounting pressure reduces temperatures by up to 10°C. You can learn more about what we did in the Overclocking section of our Radeon VII review. Replacing the thermal pad between the Radeon VII GPU and its cooler with liquid metal TIM was found to lower the GPU's maximum junction temperature by 5 °C, and a 24 MHz gain in minimum sustained engine clock speed was observed, by German professional overclocker Roman "der8auer" Hartung. AMD uses a strip of highly conductive Hitachi Chemical TC-HM03 thermal pad as the interface material between its reference Radeon VII cooling solution and the "Vega 20" MCM. Based on vertically-oriented graphite strands, the TC-HM03 is rated to offer 25-45 W/m·K of thermal conductivity, which beats most aftermarket fluid TIMs on paper, including those based on diamond. The conductivity and longer lifespan compared to fluid TIMs is probably why AMD chose it.

Liquid metal is the best possible DIY thermal interface material currently available in the retail market, however it requires careful application because it is electrically conductive and can short open vias or SMDs. der8auer used nail polish to insulate the SMD electrical components surrounding the GPU die on the fiberglass substrate. After drying it, a generous amount of liquid-metal was spread over the uniform MCM cluster. To prevent any air-gaps between the cooler and the TIM layer that's bound to be thinner than the thermal pad, a layer of liquid metal was also coated on the base of the cooler. The retention module was fastened a little on the tighter side. The maximum junction temperature of the GPU lowered from 106 °C to 101 °C, and the minimum GPU clock sustained increased from 1709 MHz to 1733 MHz. The boost frequency, however, remained around 1780 MHz. You can watch the full video presentation by der8auer here.
Add your own comment

28 Comments on Liquid Metal TIM Shaves 5°C Off Radeon VII Junction Temperatures

#1
xkm1948
So that means the actual OEM thermal pad is great!
Posted on Reply
#2
cdawall
where the hell are my stars
xkm1948 said:
So that means the actual OEM thermal pad is great!
Yep the GPU just puts out gobs of heat lol
Posted on Reply
#3
Blueberries
Roman himself advised not to replace the pad, the performance improvement was minimal and the graphite solution lasts longer.

...and since when is der8auer a "professional overclocker?!"
Posted on Reply
#4
Bones
Blueberries said:
Roman himself advised not to replace the pad, the performance improvement was minimal and the graphite solution lasts longer.

...and since when is der8auer a "professional overclocker?!"
Here's the answer as an example of it.
https://hwbot.org/newsflash/4441_ocwc_poitiers_2017_wizerty_dancop_orion24_and_niuulh_qualify_for_final

Woudn't have been in it if he wasn't a Pro in some capacity.
If you didn't know already then believe me, he knows his stuff.
Posted on Reply
#5
champsilva
Blueberries said:
Roman himself advised not to replace the pad, the performance improvement was minimal and the graphite solution lasts longer.

...and since when is der8auer a "professional overclocker?!"
And why he isnt?

Posted on Reply
#6
king of swag187
Oh woah! A startling 5C drop off 110C? It's a miracle!
Posted on Reply
#7
phanbuey
So basically not worth it at all.
Posted on Reply
#8
Xzibit
xkm1948 said:
So that means the actual OEM thermal pad is great!
He is even getting into the business of selling pads himself soon

<div class="youtube-embed" data-id="d_O6XhKL-VI"><img src="https://i.ytimg.com/vi/d_O6XhKL-VI/hqdefault.jpg" /><div class="youtube-play"></div><a href="https://www.youtube.com/watch?v=d_O6XhKL-VI" target="_blank" class="youtube-title"></a></div>
Posted on Reply
#9
natr0n
I have a brand new tube of that metal stuff wondering if I should mess with it. The color nail polish is a good idea show coverage better.


Also, This dude reminds me of Bruno from Ali G's show back in the day. Yaaa
Posted on Reply
#10
kastriot
It's ok he likes to make records it's his hobby/profession/passion.
Posted on Reply
#11
ZoneDymo
Wasnt a bit problem according to GamersNexus that the coldplate barely made contact with the GPU chip?
I would want to see what happens when you put a proper watercooling block on this gpu.
Posted on Reply
#12
Basard
ZoneDymo said:
Wasnt a bit problem according to GamersNexus that the coldplate barely made contact with the GPU chip?
I would want to see what happens when you put a proper watercooling block on this gpu.
Yup....
Posted on Reply
#13
gdallsk
I wonder what water cooling can do for this thing :)
Posted on Reply
#14
Imsochobo
gdallsk said:
I wonder what water cooling can do for this thing :)
1950 or there about and I expect good chips 2050.
Then I wonder... is it better to buy a 2080 and oc that one ?
Posted on Reply
#15
delshay
Bones said:
Here's the answer as an example of it.
https://hwbot.org/newsflash/4441_ocwc_poitiers_2017_wizerty_dancop_orion24_and_niuulh_qualify_for_final

Woudn't have been in it if he wasn't a Pro in some capacity.
If you didn't know already then believe me, he knows his stuff.
If Buildzoid had access to the exact same hardware, he would come top of the benchmark most of the time. He has the knowledge to "Hardware MOD".
This is a big advantage over most overclocker's out there.

champsilva said:
And why he isnt?


You have to remember, he has access to many of the same CPU/GPU. So he can cherry pick the best one for overclocking. Not many user(s) has access to 10+ Ryzen 1800X.
Posted on Reply
#16
zenlaserman
der8auer definitely knows his business - he thinks outside the box and is quite clever with his tuning.

Being that good attracts haters, as one can see by his current and past records.
Posted on Reply
#17
raptori
Now we need Hitachi Chemical TC-HM03 on Amazon.
Posted on Reply
#18
XXL_AI
I've had enough with der8auer's BS.
Posted on Reply
#19
Dante Uchiha
Meh...

Undervolt is the best solution: <a href="https://www.reddit.com/r/Amd/comments/apd9gb" target="_blank" rel="nofollow">Amd/comments/apd9gb</a>

-26° in the junction temp.
-10° in GPUCore.
Posted on Reply
#20
Gasaraki
Blueberries said:
Roman himself advised not to replace the pad, the performance improvement was minimal and the graphite solution lasts longer.

...and since when is der8auer a "professional overclocker?!"
Huh? What is he then? That's all everyone knows him as.
Posted on Reply
#21
delshay
raptori said:
Now we need Hitachi Chemical TC-HM03 on Amazon.
I'v been searching for days can't find it anywhere other than Hitachi website.
Posted on Reply
#22
Mescalamba
That makes that graphite pad very impressive, if you get just 5°C extra. Isnt 5°C difference between high-end "grease" TIM and Liquid Metal?

Question is, how safe is liquid metal stuff there.
Posted on Reply
#23
king of swag187
Imsochobo said:
1950 or there about and I expect good chips 2050.
Then I wonder... is it better to buy a 2080 and oc that one ?
For gaming yes, even the late and great beats it by a average of 5%
Posted on Reply
#24
hat
Enthusiast
Mescalamba said:
That makes that graphite pad very impressive, if you get just 5°C extra. Isnt 5°C difference between high-end "grease" TIM and Liquid Metal?

Question is, how safe is liquid metal stuff there.
Not very. Putting it on a GPU is just asking for trouble. That's why this guy put nail polish over those components... if the liquid metal touches them, the card is screwed.
Posted on Reply
#25
champsilva
delshay said:
If Buildzoid had access to the exact same hardware, he would come top of the benchmark most of the time. He has the knowledge to "Hardware MOD".
This is a big advantage over most overclocker's out there.



You have to remember, he has access to many of the same CPU/GPU. So he can cherry pick the best one for overclocking. Not many user(s) has access to 10+ Ryzen 1800X.
All professional overclockers has. And sometimes from multiple sources like Intel, Nvidia, MSI, AMD, Gigabyte and so on.
Posted on Reply
Add your own comment