Dell Inspiron 7586 Thermal/Temp question

So, not so long ago i picked new Dell inspiron 7586 laptop as my on-the-go machine.

I wanted to squezee as much as I could, so I did following tweaks:

I re pasted cpu (i7 8565u) with liquid metal (cool laboratory)

I undervolted my cpu by -105mv

I turned off tdp limit in XTU.

So now my cpu draws 50w and runs 4.1ghz on all cores, but it overheats quite fast. Is there anything I can do to cool it down more or this is just a laptop/cooling limitation and I'm just pushing it too hard? Normally this cpu should draw no more than 25w.

 

hey Pagis,

Here are some recomendations, I`m owner of a Inspiron 5480 with a very similar configuration, I have the i5-8265u, mx150, 16gb, 256gb ssd.

Unfortunatelly this laptop have a very poor thermal dissipation system, with a dual heatpipe it would be a little monster.

I believe that all you did is good, I would recommend to properly refrigerated the VRMs, if you search about XPS line you`ll see, by removing the TDP limit easily you will fry your VRMs, so they need a better cooling solution be sure to use low w/m2 thermal pads for this, you can also add a layer of a high wattage thermal pads (like the 17w/m² fuji ones) in line with the main heatpipe "increasing" it's transmission and thickness, additionally, check if on the bottom lid of the chassis there is a plastic piece around the fan area, my system came with this blocking the air flow, it caused the entire system to overheat, I was not able to use the MX150 even disabling the CPU turbo and undervolting it to 850mv, it was hitting 75C that trips the power limit of the GPU, after I removed it temperatures dropped 10C (pic attached)

 

Hey, thanks a lot! What thermal pads do you recommend? Would IC graphite pads work?

 

the IC graphite is for CPU only, for this work you need something thicker, between 1-1.5mm

for the VRMs I've read that the Arctic Thermal Pads would be good

https://www.arctic.ac/worldwide_en/thermal-pad.html

for the heatpipe I would use the fujipoly

https://www.amazon.com/Fujipoly-Extreme-System-Builder-Thermal/dp/B00MQ6AJU2

here are some ideas of what would have to done

https://forum.level1techs.com/t/project-make-the-xps-15-less-on-fire-custom-heatsink-mod/135326/4

 

I added fujipoly pads on the heatpipe and did few tests with removed back lid. I was able to sustain full clock speeds for longer period without overheating. I will add same pads on my vrms little bit later.

I've managed to get 852 in Cinebench r15, which is really good for ulv cpu in a cheap ultrabook.



For some reason picture is not showing up. Here's a direct link: https://ibb.co/FXHT59V

 

wow! that's insane!

did you notice a temperature decrease after using the fuji? It should not be something aggressive but around 3-5°C would be achievable on sustained load

take some pictures of internals, how it is applied the thermal pads afterwards, this would be very helpful for others