P370-P377 GPU2 heatsink

Remember reading here there were 2 models of heatsink for GPU2 on these models:

Exactly! After researching alot, I found out that there's two heatsink models for the 2nd GPU for Clevos P370 to P377, I got unlucky, I have the bad one, here's a picture that shows the difference betwen the good one and the bad one (the one that I have is the one on the left):


(credits for the guy who took the picture, I got this picture in a forum couldn't find the author post anymore to give him propper credits, sry...;/)

Anyone have more details pics on the good/bad models? I notice recently my GPU2 is 9 degrees hotter than GPU1 after repasting. Looking to replace mine.

 

Can't see the picture.

 

9C hotter on the slave is exactly what I found with my P370EM

IIRC the difference was that the GPU heatsinks for the SM models were bonded together - EM are two piece

 

Yup. EM's slave GPU shares CPU heatsink.

 

I am using the P377 so separate heatsinks.for cpu n gpus. I am interested in this old post:

http://forum.notebookreview.com/thr...ra-safe-for-gtx-980m-for-clevos.797304/page-2

But can't see the pics of good n bad heatsinks. Looking to check my version n replace if it will drop the temps.

 

It was 2-piece EM heatsink on the video so if you already have CPU and GPU2 heatsinks separated then you have the better heatsink.
Things you could do to improve your temps even more:
* use a stand
* seal the gaps between fan and heatsink. Foil tape works well.
* make the intake holes a bit larger. Small drill bit works well.

GPU1 fan can be replaced with P870 fan to get a way better airflow. Just make sure it is 5v fan.

 

Proper sealing and the use of liquid metal can also help.

 

Thanks guys, was in a hurry so no time to play with LM, instead I repasted the GPU2 heatsink with Kryonaut. This dropped me about 3 degrees from the original IC Diamond 7. So now GPU2 runs 5 degrees higher than the GPU1. I suspect the longer heatpipes on the 2nd GPU heatsink makes it more inefficient.
Will try using foil tape to close off all gaps in the exhaust port to increase air pressure.
Anyone have a GPU2 cooler or same temp as GPU1 under load?

 

I had it a bit cooler with 680M SLI, but when I upgraded to 980M SLI then the GPU2 started to run hotter. The gap increases when the temperature reaches higher degres. Right now in the winter time it stays cooler and the gap is small. Unigine Heaven with autofans max was 76 and 79 degrees. +100MHz core and +100MHz memory overclock.
With max fans 72 gpu1 and 68 gpu2.

 

It can depend on the differences between the silicon quality on the chips. Is there a difference if you swap the cards?

 

Interesting, I have used the Cooler Master SF-17 notebook cooler and raising the angle cools it further. I noticed both GPUs at idle are more or less same temp. However once I load them in Monster Hunter World, the difference in temps gets much bigger. Last night I hit max 80/83 degrees.
Seems the slave GPU heatsink is indeed less efficient. Over the weekend I will try using TG Conductonaut on both GPU and maybe the CPU as well. Lowering the CPU temp may mean less heat buildup inside the chassis and lower temps for all components including these GPUs.
It is winter now and want to lower as much as possible before summer hits. The turbo clocks are sustained until 87 degrees, beyond that they start falling.

 

Raising the back lowers the resistance on the fans so not surprising it helps under load.