Repasted laptop GPU 1660 TI ends in higher temps than before

[thesmokingman]

There's no problem to be more IF the pressure manages to spread it even (up to zero) in which I doubt. A fellow forum member (@nguyen) suggests heating up the paste with a hairdryer or hot gun before screwing the heatsink and it definitely makes sense. It would make the paste less viscous, allowing it to spread easier.

Can also drop the syringe of paste into a mug of hot water for a few minutes. This is super easy if you have a hot water boiler.

 

[Mussels]

You're totally welcome to disagree - you have the thing in front of you and i'm making educated guesses

that sounds like a hellish laptop to own and work on, if its that fussy with thermals

 

[Empecial]

this is definitely an issue where the paste is the wrong TIM for the job

damn... guess my fate is sealed in that regard then. new paste for the job

It took me 4 attempts in repasting, changing pastes and application methods (and lots of reading) until finally finding the right way. One year later all is better than good.

wow, 4ghz with 75C max? right after a stress test like that? and no Limit reasons? not bad at all. nicely done. hoping i can get somewhat close to that sometime...

 

[duskw4lker]

damn... guess my fate is sealed in that regard then. new paste for the job

wow, 4ghz with 75C max? right after a stress test like that? and no Limit reasons? not bad at all. nicely done. hoping i can get somewhat close to that sometime...

I'm late to the party, but I just want to say that Thermalright TFX is awesome, difficult to apply at room temperature (heat it up with a hairdryer) but with really good results.

A thick paste is your best friend.

 

[FreedomEclipse]

Not sure if its been mentioned yet but it should honestly be thermal pads on the VRMs and memory chips not thermal paste.

The pictures might show good contact but metals can suffer from thermal expansion or warping which could be pushing against stuff so that not all the things that need to be cooled is making contact with the heatsink... Thats why thermal pads exist because they can compress down when you mount the cooler then expand like a sponge if it the temperature gets too hot and the cooler starts warping/expanding etc etc. metals will shrink back down to normal size when they are cold. Though some wont if they get too hot like an engine block.

Ive never seen people put thermal paste over the thermal pads before, I would think that compromises the efficiency of the pads as you contaminate whatever oils and chemicals used to make the pads and thermal paste is better for metal on metal or die on metal contact. The thermal resistance of a thermal pad is a lot higher than the thermal paste since paste is usually compressed/squeezed down to an extremely thin layer. Id go as far as saying youre probably insulating the VRMs by putting paste on the thermal pads though I dont have any evidence to back up by claims apart from not seeing anyone do it before and i was here with the enthusiast boom since the 90s. Maybe some people tried it and found it didnt work as well as they thought so told all the other people not to do it.

If thats how you got the laptop from the retailer. I would send it back and get a refund because the manufacturer really shouldnt be putting thermal paste on thermal pads and using thermal paste where they should be using thermal pads.


Maybe im rambling but this is just my $2. Copper starts to thermally expand at around 21'C (70'F)

 

[AOne]

@FreedomEclipse - My laptop comes like this from the factory. There are no pads, just paste. I think it would be cheaper with pads instead of paste, so I doubt it's a miss, especially on a 2500+ $ laptop. I believe it's a way to avoid tolerance issues, when pads might come so thick, that they can't guarantee touching between chip and heatsink. If the surface area of the chip is little, the pad can deform, but if it's too large, it's impossible.

 

[FreedomEclipse]

alright, well good luck. Though the pads is where i would start.

 

[duskw4lker]

@FreedomEclipse - My laptop comes like this from the factory. There are no pads, just paste. I think it would be cheaper with pads instead of paste, so I doubt it's a miss, especially on a 2500+ $ laptop. I believe it's a way to avoid tolerance issues, when pads might come so thick, that they can't guarantee touching between chip and heatsink. If the surface area of the chip is little, the pad can deform, but if it's too large, it's impossible.

Amazon.com

I believe this is the stuff they put instead of pads.

 

[FreedomEclipse]

Amazon.com

I believe this is the stuff they put instead of pads.

Yeah, i personally would prefer pads or putty but not paste where pads should be. Maybe im just oldschool like that.

 

[Empecial]

Thermalright TFX

alright, i'll add it to the list. Btw just for reference, which laptop do you use and how much difference did it make?

personally would prefer pads or putty but not paste where pads should be

well, you are right i guess. as long as they work as intended and dont start to cause thermal issues...

 

[duskw4lker]

alright, i'll add it to the list. Btw just for reference, which laptop do you use and how much difference did it make?


well, you are right i guess. as long as they work as intended and dont start to cause thermal issues...

HP Omen 15 2019 - i7-9750h - rtx 2070 minimum-q 90w

I repasted because while playing cyberbug 2020, I got random hibernations (ACPI Thermal zone) because the CPU reached TJmax 100°C with an average of 90-97°C. Consider that while playing there's a combined load with the GPU at 97% usage at 71°C and a shared heatsink/pipe

Now, it still gets hot, I get red prochot in TS meaning there's always random spikes of high usage, but no hibernation and can go for hours @3.998,97 Mhz. When I check TS with the game on the background, it gets to around 85°C across the 6 cores and the GPU still at 70-71°C

SS attached is while idling, it's summer here so it gets a little hot but look at the core uniformity. Note also, there's a 5°C +/- delta on the max temps, that is documented by Intel as acceptable variation during high load.

Really good paste, can't complain.

 

[Empecial]

85°C across the 6 cores and the GPU still at 70-71°C

very interesting. definetly have to check if this one is in stock. thanks for your input