RTX 4080 MXM on Clevo. Hot as heck

[Maro97]

100w heatsink with 150w gpu 

[SuperMG3]

1 minute ago, Maro97 said:

100w heatsink with 150w gpu 

I can lower to 110W using MSI Afterburner but...

 

It also decreases the thermal limit. From 83C to 75C. Yes it thermal throttles at 75C at 110W... Funny

[Maro97]

And don’t forget this 

In the process of insulating the capacitors around the GPU chip

https://a.co/d/0SE7XoO

[Maro97]

I know you have a good experience i read many of your post on AW fourm but i must remind you

[SuperMG3]

21 minutes ago, Maro97 said:

And don’t forget this 

In the process of insulating the capacitors around the GPU chip

https://a.co/d/0SE7XoO

That's how I did it

[Maro97]

Heat dissipation from the heatsink will be weak with PTM and these thermal pads, as the gap between the GPU core and the heatsink will be relatively large.

Use liquid metal along with properly sized thermal pads, because the GPU’s power is high compared to the heatsink’s performance

[Maro97]

Could you please send me a photo of heatsink sides ?

[SuperMG3]

4 minutes ago, Maro97 said:

Heat dissipation from the heatsink will be weak with PTM and these thermal pads, as the gap between the GPU core and the heatsink will be relatively large.

Use liquid metal along with properly sized thermal pads, because the GPU’s power is high compared to the heatsink’s performance

I don't understand the video because I can't watch it right now. I don't understand what gap do you mean? Between the GPU die and the copper heatsink?

[Maro97]

and in your case don’t advice to use a cooper shim on the gpu core

[SuperMG3]

5 minutes ago, Maro97 said:

and in your case don’t advice to use a cooper shim on the gpu core

Eurocom told me to use a copper shim lol

[Maro97]

1 minute ago, SuperMG3 said:

I don't understand the video because I can't watch it right now. I don't understand what gap do you mean? Between the GPU die and the copper heatsink?

I know because you don’t do it before 

Watch the video and you’ll understand — I used to do the same as you, estimating the size of the thermal pads on GPU cards in all my laptops just by eye, without any actual measurements using a millimeter gauge. But when I applied the method shown in this video on one of the laptops I own, I realized that you must calculate the thickness of the thermal pads for each component they will cover before placing the heatsink on the GPU die.

[SuperMG3]

3 minutes ago, Maro97 said:

I know because you don’t do it before 

Watch the video and you’ll understand — I used to do the same as you, estimating the size of the thermal pads on GPU cards in all my laptops just by eye, without any actual measurements using a millimeter gauge. But when I applied the method shown in this video on one of the laptops I own, I realized that you must calculate the thickness of the thermal pads for each component they will cover before placing the heatsink on the GPU die.

And why mine has big gaps? If they all touch?

[Maro97]

3 minutes ago, SuperMG3 said:

Eurocom told me to use a copper shim lol

Do you know which thickness you need …absolutely not cuz if you use a wrong thickness you be crack the gpu chipset like this photo 

[Maro97]

3 minutes ago, SuperMG3 said:

And why mine has big gaps? If they all touch?

Maybe not big gaps 

It’s not a huge difference — it might even be small — but use liquid metal to reduce the temperature. It will lower it by at least 10 degrees compared to what it is now.

[ssj92]

I don't put liquid metal on my components anymore. 

 

PTM7950 should work well if the thermal pads are thin and allow proper contact to the core. 

 

So it seems 4080 supports eDP. 

 

Would be interesting to see it's thermal performance in M18xR2 with 3080 heatsink. 

 

If I can cool a 125w WX7100 OC in M17xR3, M18xR2 should be able to cool 4080 with 3080 heatsink in M18xR2. 

 

If that is the stock heat sink you're looking at 100w dissipation 

[SuperMG3]

12 minutes ago, ssj92 said:

I don't put liquid metal on my components anymore. 

 

PTM7950 should work well if the thermal pads are thin and allow proper contact to the core. 

 

So it seems 4080 supports eDP. 

 

Would be interesting to see it's thermal performance in M18xR2 with 3080 heatsink. 

 

If I can cool a 125w WX7100 OC in M17xR3, M18xR2 should be able to cool 4080 with 3080 heatsink in M18xR2. 

 

If that is the stock heat sink you're looking at 100w dissipation 

No all the RTX 4000 don't support eDP. 4070,4080 NO EDP!!!

 

I get 255FPS on FurMark at 1080p with 120W limit. Still hits the thermal throttling at the end of the test but not by too much (95-100W)

[SuperMG3]

I still haven't tried the 4070 (115W) on the Clevo P570WM but on my Dell Precision M6700 the temps were so high and the memory temps reached over 115C

 

Do you guys think I should add a 4th heatpipe?

 

I have 3 heat pipes. 2 for GPU and one for top VRAM/VRM

Edited Thursday at 11:29 PM by SuperMG3

[SuperMG3]

14 hours ago, SuperMG3 said:

I still haven't tried the 4070 (115W) on the Clevo P570WM but on my Dell Precision M6700 the temps were so high and the memory temps reached over 115C

 

Do you guys think I should add a 4th heatpipe?

 

I have 3 heat pipes. 2 for GPU and one for top VRAM/VRM

I can't send a picture because of the limit but I have a place to add a 3rd heat pipe on the copper plate of the GPU die.

 

I also have some margin to glue the heat pipe on the heatsink. 

 

I bought 3 18cm heatpipes because it's an enough length. I bought some thermal glue that works between -60C to 250C.

 

I did see a video on how to bend a heat pipe with bare hands, but don't you guys have something safer and can be done for free?

[panda_zzz]

17 minutes ago, SuperMG3 said:

I did see a video on how to bend a heat pipe with bare hands, but don't you guys have something safer and can be done for free?

 

[SuperMG3]

19 minutes ago, panda_zzz said:

 

Yes this one too. He used a rubber toy 

[SuperMG3]

1 hour ago, panda_zzz said:

Do you see my heatsink? There's a place to add one heat pipe, I need to curve them like the first and second heat pipes.

Do you see my heatsink? There's a place to add one heat pipe, I need to curve them like the first and second heat pipes.

 

 

EDIT: Bruh I bought brass heat pipe... (Copper and some zinc)