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dryroon
11-02-2016, 03:01 AM
Hello everyone,

My laptop is the G751JY with i7 4860HQ + GTX 980M 4GB model
Playing Mafia 3 in a 20C (68F) room/ambient temperature my CPU gets 92-96C on the cores and 3100rpm on the fan, only at 48-52% of usage.

My power options is to leave CPU at 100% when using the AC adapter, monitoring by MSI Afterburner and Aida64 (I open system stability test without running it so it saves maximum statistics, pic below).

My question is: I was going to disassembly and install Arctic Silver 5 thermal paste on the CPU, the problem is that the heat-sink is attached to the GPU on this laptop and I don`t have their thermal pads to reinstall, does anyone knows where to get them? there is some on eBay but looks stiff, not like the OEM. I know that they are really soft by the pic below, exactly the same as my previous G750JM.

Also, do someone who Has the same laptop can please report the temperatures?

I have a little overclock on the VGA and the GPU temp don`t goes over 82C at 100% of usage, so idk why the cpu is getting so hot..

https://s3.postimg.org/ssszu5pnn/aaa.jpg
https://s18.postimg.org/8qpnjjqk9/thermalpaste.png

thanks!

JustinThyme
11-02-2016, 03:09 PM
Hello everyone,

My laptop is the G751JY with i7 4860HQ + GTX 980M 4GB model
Playing Mafia 3 in a 20C (68F) room/ambient temperature my CPU gets 92-96C on the cores and 3100rpm on the fan, only at 48-52% of usage.

My power options is to leave CPU at 100% when using the AC adapter, monitoring by MSI Afterburner and Aida64 (I open system stability test without running it so it saves maximum statistics, pic below).

My question is: I was going to disassembly and install Arctic Silver 5 thermal paste on the CPU, the problem is that the heat-sink is attached to the GPU on this laptop and I don`t have their thermal pads to reinstall, does anyone knows where to get them? there is some on eBay but looks stiff, not like the OEM. I know that they are really soft by the pic below, exactly the same as my previous G750JM.

Also, do someone who Has the same laptop can please report the temperatures?

I have a little overclock on the VGA and the GPU temp don`t goes over 82C at 100% of usage, so idk why the cpu is getting so hot..

https://s3.postimg.org/ssszu5pnn/aaa.jpg
https://s18.postimg.org/8qpnjjqk9/thermalpaste.png

thanks!


Plenty of places to get thermal pads for the Vram

Here is just one. Same source has multiple choices. Just search thermal pads.
http://www.newegg.com/Product/Product.aspx?Item=9SIA3XT1D86602&nm_mc=KNC-GoogleMKP-PC&cm_mmc=KNC-GoogleMKP-PC-_-pla-_-Cooling+Device+-++RAM+Heatspreaders%2FHeatsinks-_-9SIA3XT1D86602&gclid=CJ-DmI2titACFcoehgodNOIPDA&gclsrc=aw.ds

dryroon
11-04-2016, 05:08 AM
Plenty of places to get thermal pads for the Vram

Here is just one. Same source has multiple choices. Just search thermal pads.
http://www.newegg.com/Product/Product.aspx?Item=9SIA3XT1D86602&nm_mc=KNC-GoogleMKP-PC&cm_mmc=KNC-GoogleMKP-PC-_-pla-_-Cooling+Device+-++RAM+Heatspreaders%2FHeatsinks-_-9SIA3XT1D86602&gclid=CJ-DmI2titACFcoehgodNOIPDA&gclsrc=aw.ds

Thanks but as indicated on the post I had no problem finding these on ebay/newegg etc, my concern is if the original thermal pads are exactly the same (material/thickness/specs) as these on sale.
As my experience with the G750JM they seems to be like a thick thermal paste, while these available looks more solid... it is a expensive laptop and gpu is also on overclock so I just want to make sure these will perform the same or better.

Buggsy
11-04-2016, 02:54 PM
Is that your motherboard or a stock photo? If you haven't done it yet, you can usually reuse thermal pads as long as you keep them clean. On other laptops/video cards, I've used a very clean plastic scraper or a credit card to carefully separate them.

However, I know that if you search on here or just look through the last few pages of posts, there was a thread recently that discussed the thickness of the pads. Honestly, thermal pads aren't that good anyways, so there isn't that much leeway in how good/bad the replacements are. Don't buy the generic brands and you'll be fine. If you're concerned about stiffness, Arctic makes some pretty soft ones.

dryroon
11-04-2016, 05:28 PM
Is that your motherboard or a stock photo? If you haven't done it yet, you can usually reuse thermal pads as long as you keep them clean. On other laptops/video cards, I've used a very clean plastic scraper or a credit card to carefully separate them.

However, I know that if you search on here or just look through the last few pages of posts, there was a thread recently that discussed the thickness of the pads. Honestly, thermal pads aren't that good anyways, so there isn't that much leeway in how good/bad the replacements are. Don't buy the generic brands and you'll be fine. If you're concerned about stiffness, Arctic makes some pretty soft ones.

Yes I did this process of reusing them on my previous laptop -G750JM with GTX860M- was fine because it was a middle range product and also without overclock. On this one I am more worried in doing it as it is a top end series and use more voltage/carries more heat.
No the picture is from a video I found on youtube, didn`t started on mine yet.

I have found some useful information for who needs it, and you are completely right thickness seems to be the most important part of it.

They are not good as thermal paste but there is no way out as they are mainly used to fill the gap between the chip/heat-sink, if you use thermal paste it will not fill the gap and might burn/shutdown your system.

So the golden rule is to find the correct thickness, to much will create a poorly heat transfer and to little you not make the contact, thermal conductivity is measured by W/mK and more the W number the better. One of the best cost-benefit by the reviews is Fujipoly and they have 3 versions: 6.0, 11.0 and 17.0 W/mK on frozengpu.com. Saw some forums where they overclocked 50% more due these performance pads also reducing 25-30% of the temperature.

I just bought this fujipoly 11.0 W/mK with 1.0mm thickness (link below), found someone who used this thickness for the GTX980M and another way I figure out was by comparing with the G750JM, as I remember 0.5 or 0.7mm would be too small for it so 1.0mm seems correct, hope they follow the same design and this will work well.

I will make a video/tutorial disassembling and installing it if have success and will post here.

Thanks!


http://www.frozencpu.com/products/16883/thr-168/Fujipoly_ModRight_Extreme_System_Builder_Thermal_P ad_Blister_Pack_-_60_x_50_x_10_-_Thermal_Conductivity_110_WmK.html?tl=g8c487s1290

hexaae
11-05-2016, 03:19 PM
Definitely too much thermal paste from those photos. Much less is required.
Too much paste = higher temps.

miguel pereira
11-05-2016, 03:57 PM
Read this topic:

https://rog.asus.com/forum/showthread.php?88277-G752VS-Lowered-CPU-voltage-in-BIOS-no-more-throttling

I know its no the same model, but you can also do some undervolting along with the new termal paste.