P870DM watercooling mod

bought this laptop for desktop like performance, but unfortunately this laptop throttles just like any other high specced gaming laptop, cpu i7 6700k would shoot to 95c, and the gpu 1080 sli consistently stayed at 89-90 during games like pubg.

With watercooling, cpu was able to hold 4.5ghz OC with temps maxing out at 60-70c and gpus around 65c in demanding games. With this specific waterblock the laptop also maintains its air cooling capabilities for on the go use.

 

You can get similar results by delidding the CPU and changing the stock pads with thinner ones and using liquid metal. Nice work but that does seem quite high temps for water, what's your fluid temp?

 

I move the laptop every couple of months, so liquid metal would not have been suitable. water temps are around 30 when idle, and 47 when i left unigine heaven on for 2 hours

 

Nice. Glad to see one of these finally installed outside of Baidu and needing Google translate to understand

Your loop temps seem high compared to mine, I've never seen more than 10 C over ambient with the same unit same hardware (and the loop doing most of the cooling because fans are on low speed due to temps). Are your radiator fans in push? Is the air introduced from each connect/disconnect getting trapped in the radiator?

And I don't want to jinx you but my worry with that dual block was always the lack of sealing, orings gaskets etc... and are the connectors on the laptop self sealing once disconnected?

 

in the current setup the radiator is running push, but its relatively close to the wall so that may be contributing to the higher temps.
As for leaks, the connector piece are screwed pretty tightl, and ill add some silicon to the connector piece at a later date for redundancy
The connectors are not self sealing, I plan to add a valve to the tubes for easy draining.

 

If its not, put your rad as the first thing after the laptop block so the heat is removed from the water when it is hottest, before it enters the res and pump and all that. A 360mm with good fans should handle 400W of heat ok. Mine does it with 6x cheap quiet fans

Also where's your bleed point? Air will be introduced into the loop with each connect/disconnect cycle which will collect somewhere and need to be periodically bled, especially if you're losing the fluid from inside the laptop block part of it each time.

I just tried furmarking for 20+mins at 190W per gpu and loop temp maxed at 22.3C, up from 14.5C on idle. (58/56C max GPU temps). My rad is straight after the laptop and the temp probe is sitting inside the res after the rad.

 

I have no barriers in place and move it around freely, liquid metal does not cement your machine to the ground.

 

Wait I'm confused, that doesn't look like the vapour chamber heatsink. How did you manage to run 1080 SLI without it? You likely could have gotten similar results with it and LM

 

It's a modified one with water flowing in it.

 

It's a two piece copper block with channels cut into it for water cooling. Not a vapour chamber just lots and lots of copper, with some heatpipes for air cooling.

While VC and liquid metal is better at heatspreading than just copper, the removal of the heat is still by (relatively) small fans and radiators in the laptop. The water takes it to an external rad (with about 30x more fin volume by my guestimate) so airflow can be way lower, and still remove the same amount of heat to air, while keeping a much lower dT.

 

delidd it.
Liquid metal does not move around. I move my notebook on a daily basis every day for years, nothing happened so far.
Liquid metal hates to leave the die.

 

It does move if you use too much and have it on top of the ihs between it and the heatsink.

 

We talk about delidd, which means it would be between the die and IHS. As long you do a proper application it won't move, even if yuou do IHS to heatsink.

 

To get temps towards those levels it does need to be fully liquid metal on all thermal contact points.

 

I've been following this thread for a while and I'm very interested in getting one of these. How are you disconnecting it? Do you have self-sealing valves? And how is the cooling performance when not connected to the water? Can it run stock settings when not connected?

 

@bennyg would know

 

i have quick disconnects, cooling performance when not connected to water is similar to stock, idles and web browsing around 40-50, gaming goes up to 85+

 

Not this particular heatsink. I DIYed onto the stock VC. The one ITT replaces it entirely.

 

That's cool, so which quick disconnects do you use? Can you share a photo of the back of the laptop while connected?

 

I'd like to see those none water results if you have sacrificed the vapor chamber.

 

I dont see any link or name of the water cooling solution.

 

I don't get one thing, how did you connect the watercooling circuit to the laptop itself? All i see is photos of a radiator and a water circuit and the heatsinks of the laptop but not a photo if it implemented.

Would be useful to post more photos or a DIY in case anyone is willing to do it.

 

how much will it cost to buy it ? I would like to have one like this

 

4th picture down, look at the back of the machine next to the power connector.

 

Where I can find this cooling solution?
I thought Clevo will manufacture it officially for the new models with RTX and i9?!

 

This is homebrew style stuff.

 

It's a good quality and it looks very nice.

 

You can buy it only on Taobao:
https://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.159.4f637484KmCm7d&id=561089705878