*** Official Clevo P870DM2/P870DM3 (Sager NP9873/NP9872) Owner's Lounge! - The Phoenix 2 is here! **

Yeah those temps seem pretty good. 2-4C delta is pretty normal.

 

so around 70c is normal for both gpu loaded?

 

Yeap, it will will go up somewhat when the processor is stressed at the same time. But temps seem to be great. Whats the peak power draw on each of the GPU'? (and average)

 

Avg 170w

Peak 195w

 

You Gucci fam.

 

dank


trying to hit 5ghz with the stock bios right now, it holds for like 10 second then throttle back down to 4.7


4.9 runs fine with -40mv
4.8 runs fine with -90mv

 

Will test this soon...

 

Sweeet! Tonight?

 

Perhaps. I need to clean up my mess in my office first. Definitely tomorrow if not tonight.

I ordered some of the solder paste you recommended (lower melting point) and I will use it on the other DM3 heat sink to compare ease of application and thermals. This stuff was really hard to melt, so it might not be bonded as well. But, we will find out soon.

I am also going to dry test the fit with pre-scale film. I used a 1.0mm shim instead of 0.5mm and I will check with the c-clips on first.

 

Sweet. Looking forward to the results. I basically spread a slightly thin layer of the paste on the heat sink and placed the shim on top. Then before applying heat cleaned out the excess along the edges using a q tip.

 

That is how I did it on the old P750ZM test run. On the DM3 heat sink I applied an X on the shim, melted regular flux on the heat sink surface, then set the shim place face down without smashing out the paste and let the application of heat collapse the solder paste out from underneath it so I could verify it melted. Then I applied pressure on the shim to be sure it was squished out around the perimeter on all 4 sides while continuing to apply heat. Whether that was an effective way of doing it or not, we will find out.

 

Nice work there bro. I can't wait to see your results.

 

That actually sounds like a nice idea. Ill give that a shot as well. Easier to spot when it melts.

 

OK, I am going to have to do some investigation this weekend. My CPU temps are terrible now in spite of the pre-scale film testing showing contact is greatly improved after the heat sink mod. Not sure what the deal is. I had Kryosnaut on it before and for the first time ever I was actually getting good enough temps to reconsider my long standing anti-Kryonaut bias. I put the second GPU in and assembled it and I am having ludicrous temps like I have in the past when attempting to use Kryosnaut. I don't know if the vapor chamber with one GPU was doing an excellent job of helping cool the CPU or what. I will put back the original heat sink and see if the CPU temps are better or worse compared to the modded heat sink. If they are worse, then I may pull the slave GPU and see if the temps drop back to what they were before. GPUs are fitting excellent. I am seeing only 1°C difference between master and slave GPU. More to follow once I understand what the problem is.


Here are previous examples of stock heat sinks (no shims and no c-clips removed).

 

Did putting tape to cover the gap between the fan and heatsink improved temps?? I just got my p870km1 and I find it running a bit hot.... maxing out at around 87c when GPUs are under full stress. I think is normal but would like to drop this by hopefully 2 c to stay at 85c maxed out. (most games only get it to 78-82c anyway)

 

I put tape all over the middle and cpu fan.

The leftmost fan I only tape the top and side opening of heatsink. Due to how the cable routes I am not able to put tape all around it.

My load temps are 72C GPU0 and 70C GPU1 under a synthetic load with constant utilization. If you did the thermal pad homework correctly and applied high quality paste such as Kryonaut, it is definitely possible to drop temp more than 2-3c.

My ambient is 25C in a well circulated room, laptop is raised slightly at back and not using cooling pad.

 

@Phoenix can you take down the VC thermal pad guide I post? I will make revised one today as I had just spent 3 hours yesterday checking every thermal pad.

 

can you direct me the the guide ? I want to try to lower my temps

 

Ayyy i was thinking of messaging you and Meaker about that. Got lazy .

Spoiler: I have Issues

 

I currently have Ic Dimond on the GPUS and liquid ultra on CPU. is that Kryonaut much better than the IC dimond? how much Difference you think ill make if i change it? (if applied correctly)

 

That is a pretty good fit. Could be that the solders conductivity could be the hindrance? Will it be possible to check the composition of the solder used?
Before i sent my system in , i tried Kryonaut on the IHS, and it was working pretty well. Obviously not as good as Conductonaut. But that might might because i have near perfect contact with the IHS.

 

Yes, it certainly could be. Probably so even. It definitely is possible the bond is not perfect. Will find out later today when I put back the original heat sink. If that fixes it I will wait for the other solder paste to arrive in a week or so, remove the shim and start over. I hate buying stuff on Amazon that is not available through Prime.

 

Gotcha.
It's weird when I bought it, it was available for same day delivery.

 

It looks fine, though the notebook itself is not lying flat

 

I believe the multimeter said that all the 6 larger phases output was joined together, this was a while back though.

 

The heatsink is not flat

Hmm, then maybe the bottom smaller 2 is the vram VRM then?






EDIT: Have anyone figure out how to downclock below 4.2GHz through throttlestop? The multiplier don't allow lower than 42.

 

My guess is a heatpipe is damaged.

 

TAKE A Look And it works. I have benched with BGA clocks before And beat fully locked down [email protected] in its own league

 

didn't work

setting turbo ratio 0 and set multiplier 20 is disregarded by the laptop

 

Could you test [email protected] all 4 cores? Work with 6700K. Tested
I don't remember if I tested much lower. Maybe try 2.2GHz as well or a bit above.

 

I don't have a 6700hq machine anymore :|

 

I meant 6700hq@ 3.1GHz all 4 cores clock speed.

 

oh

yea that's the thing, I can't seem to lock the cpu below 4.2 like you did in this screenshot

 

Either limitation in firmware, Kaby or wrong TS settings. Tried XTU? I don't know about the Oc settings app in CCC. You have to test it out.

 

They have no visible deformity and are still soldered well. I think I was not able to get it hot enough to flow the solder paste well enough. I think the low melting point solder paste will work better. I am going to remove the shim and test the heat sink without it to verify that.

 

The shim helps immensly when the c-clips are not removed because it fills the void created by the c-clips. With the c-clips removed a shim may not be needed in all cases, but a shim may still help if the heat sink is deformed or bent, or if the CPU retention bracket is taller than the top of the IHS and touching the heat sink before it makes contact with the IHS.

Thankfully, that is not the case.

 

I took some quick caliper measurements of the d dimensions if you want to use them in your next guide I can put something togethe for you.

 

would be wonderful

 

Here is the image it's in mm and I rounded up to the nearest mm.

https://i.imgur.com/bqNOtKn.jpg

 

How can you get both GPU temps so low? I just replaced all the thermal paste at both GPU and CPU with Kryonaut, and I am getting better temps at the CPU only.

My temps at the GPU, under Heaven Benchmark 4k Ultra Tessellation is still GPU 0= 91C and GPU 1=84C.

Any suggestions?

 

replaced thermal pad, removed thermal pad on top of chokes

 

@Meaker@Sager this looks right?

 

I replaced the stocks pads with TG Minus 8. Though only able to tackle all the 1mm and below as I didn't have all the thicker ones.

I need to get the thicker one to replace them all then.

 

ebay http://www.ebay.com/itm/1pcs-100mm-...al-Pad-/251735856827?var=&hash=item3a9ca056bb

 

Thank you, I was looking for them for so long, I ordered many of them just now. Regards

 

have fun!

 

Well I put

wait so now we're using less pads? I'll be taking my rig apart for the paint job I'm doing and I'll be buying more pads. I don't want to buy more than I need. Also are we just putting tape on the seems of the fans or are we swapping them out?

 

I put kapton tape on the seam of the fan, this is not needed but will benefit your temps since the gap is reduced.

Clevo seem to have a hardon for seams and gaps between fans and heatsink, even from the Sandybridge days.







I didn't put thermal pad on the gray squares, those are not made up of electronic devices.

The grey squares are made out of a solid metal block and inside is a copper coil, there are no components inside that can short out from prolonged exposure to high temp like VRM/VRAM.

You can put thermal pad on those, just it'll be kinda pointless. I remove it to reduce thermal pad pressure and maximize contact with the GPU core (silicon in the middle).




EDIT: If you are paranoid of the chokes failing, use K5 Pro instead of wasting thermal [pad on them.

http://www.computer-systems.gr/content/k5-pro

Here is an example of the KM1 CPU VRM choke with K5 Pro, this is way too much but will give you an idea of how it looks like.

 

The chokes do get warm and will impact surrounding parts, they are less important than the actual chips but it's still nice to keep them cool.

 

I put K5 on it just to be sure.