Putting thermal pad(s) under laptop motherboard?

Hi everybody!


My CPU temperatures are under control ~90C under full load and GPU ~80C. I want to reduce these further so as not to stress the solder joints.

I'm on an acer laptop, which is average for notebooks, if on a bit of a bulky side.

I'm thinking of putting a thermal pad under the heatsink and some areas of the motherboard, so that the heat will (hopefully) transfer to the plastic chassis. Has anybody done this and is this a good idea? I'm thinking of snipping up this ebay toy:

http://www.ebay.com.au/itm/GPU-CPU-...830690&hash=item3f3ef9e51f:g:PBQAAOSwKIpWAog~

 

With a plastic chassis you would be insulating heat, not so efficient thermal conductivity in the first place and the dissipation is even worse.

I think you might want to try and repaste the laptop before doing any cooling mods. Plus you can improve temps further with an undervolt on the CPU.

 

Undervolt
Better thermal paste or even liquid metal (only if copper heatplate)
Check heatsink alignment (should be nice and flat contacting die)
Clean fan and radiator grilles (if not new)
Increase airflow - notebook cooler blowing into fan intake; or more drastic, cut holes/widen holes under fan intakes

All these will help to remove heat off the CPU surface which is the far better goal. Heatsoak into and through the mainboard, to the extent that the other side of the PCB is hot enough in the first place, indicates primary cooling is deficient. And as said above, plastic is a poor thermal conductor so heat transfer to it would be minimal.

 

Smarts ways to reduce heat IMHO.
1. Repaste CPU and GPU thermal paste.
2. Clean cooling fins of dust this involves total disassembly of the laptop to get properly clean this.
These two small steps will go long way and do more then a cooling pad will do and the pad will do more to block air flow then help. Also putting on level table not on you lap or bed or rug these are the best ways to block air flow causing heating ranges on your laptop as well. One needs to be smart on how they use and protect their laptop to get the best performance out of it.

 

Putting thermal pads under the motherboard might accomplish something, but likely, not a lot... and depending on where you put them, you might risk messing something up.

Your best bet in reducing load temperatures would be what bennyg suggested.
1. Undervolt.
2. Clean out the laptop internals from dust.
3. Replace thermal paste on both CPU and GPU with a higher quality one.

 

Would it be better if I just put the thermal pads under the copper heatsink so that the heat is at least in contact with the out er chassis? I know plastic doesn't transfer heat well, but still?

I have undervolted my laptop, it is new from Q4 2016, and I clean out the fan by blowing air from a bicycle pump. Sorry, I should have specified this before. THank yhou for your help

 

Wrong again...thermal pads are worse then thermal paste - pads do far worse in thermal cooling then thermal paste with copper. I know I did this change on older laptop with crusty pads and the difference between it working and thermal shutdown was night and day.

Undervolting will do nothing if you don't clean out the dust bunnies from it. I've seen my brother do the blow air in and that is short term fix and the thermal overload will return. Want to do it right do it the right way. I did it and my brother hasn't complained about his HP thermal overload oven anymore.