Joining in the bandwagon as well. Been looking up for good thermal paste as gaming laptops really cook hard.

Device using: Acer Nitro 5 AN515-52 i58300h / GTX1050 4GB.

Initially I got a China unknown brand but highly reviewed on shopee, LK-17 which is said to have a thermal conductivity rating of 17W/mk.

First few month was doing great, but overall the laptop ran cooler despite for a mere cost of RM20 5g syringe. Both CPU GPU did not reach, say, 70-75 celsius under Acer Nitro balanced power profile. but when set to "Performance mode", it will spike to 79-85 celsius range, which is better than before repaste which could send it flying to 99.

After 2-3 months of using LK-17, things start to change abit, even on idling, it will spike to 50-55 celsius compared to initial stages as it would be always be below 50 no matter what profile I set.


So the time came, told myself what the heck, bought a 40x40mm PTM 7950 at RM16 (inclusive of shipping).

Not easy to apply on the chip dies, and not the fanciest despite putting it inside the refrigerator for 30mins.

Here is the results of using PTM 7950 for my Acer Nitro 5.

BEFORE:


AFTER:


CPU still can spike to 80+ range if I turn on performance mode, but under Acer Balance profile, I can see a difference of 4-5 celsius compared to using LK-17 when running Unigine Superposition Benchmark.


Also did for another laptop, Lenovo Ideapad Gaming 3 15AHC6/ RTX 3050, this thing can even cook up to 99 celsius during EXTREME test in Unigine.

BEFORE:


AFTER:



Will be monitoring it for a few more weeks/months to see if there's improvement as what they always said online.

This post has been edited by Omochao: Nov 28 2024, 07:07 AM

Done another round of Extreme and then back to Medium settings for my Acer Nitro 5.

Both cores stabilize under 70 celsius after sustaining non stop of 2 rounds heating.

Under ambient temp of 23 celsius air conditioned room.

Even the fans will turn to 0 RPM and running very silent under normal idling. Can hit as low as 36 celsius and idling hovering around 40-49 celsius which is really good temps IMO. Under load should be below 60 celsius, haven't really push for gaming as I don't really game nowadays, but with benchmark tools like superposition unigine, gpu and cpu still below 80 celsius which is very considerably good and nice.

With normal Malaysian weather, the cpu temps will hover around 47-49 celsius. No more thermal paste from now onwards.

also did a disable "Processor performance boost mode" under windows 11 power options.



Not trying to say the normal standard thermal is not good, but from using default stock paste which could made my laptop run 55-60++ celsius, now I can get better heat dissipation with this PTM 7950 thermal phase change paste. Highly recommended despite having a flawed heat sink where the gpu and cpu is interconnected.

Highly suggest that anyone who wants to change their laptop or mobile device paste should really go for this PTM 7950, no point buying Artic or Grizzly but then in the long run face pump out and degradation over time.

This post has been edited by Omochao: Dec 7 2024, 02:07 PM

https://shopee.com.my/POP-Honeywell-PTM7950...c8-3ac9a671ae35

I did look on the reviews, so far no one mentioned about degrading even going as far back as 1 year reviews. If it really is, then is still worth it.

By all means, if you doubt the price is too good to be true, you can always opt for the more expensive one if in doubt. There are countless of reviews being commented and not a single 1 star yet on this shop. The other person ask for a link, I just shared from where I got it from, I have no referral or affiliation with that store.

Recently, whenever I turned on my laptop, i notice my fan will like ramp up to a certain speed compared to last time when I was still using paste, initially assume that the PTM I used was a fake, then I just remembered reading from reddit, that some people after repasting with PTM , need to re-tighten the heat sink screws again as the sheet might have flatten down a bit and thus causing less contact with the heatsink and the chip die.

So just now, took apart and tightened it slightly and make sure that the screws have no more turns.

Did another round of test, and even with performance mode, the temp won't spike even to 70-80celsius for the CPU.

Hopefully this PTM last long and I don't have to take apart for a long time to repaste.

Almost forgotten to share another use case for another laptop in which i did for a Lenovo Ideapad Gaming 3 with Ryzen 7 5800H / RTX 3060.

Reopened it and try to tighten back the heat sink screw, but doesn't seems to be the case as I can only feel that the turns for the screw not much and don't want to risk stripping off the screw.

Run another Unigine Superposition test, with 1080p HIGH settings. And all I could say I'm really impressed by the thermals being done by this PTM 7950. All readings for both CPU GPU didn't even hit 70c at all

Laptop power options - Balance mode, with processor boost management set to disabled. Maximum processor set to 99%



This post has been edited by Omochao: Dec 29 2024, 09:53 AM

if it goes mainstream and too commercialized, the price will definitely shoot up.

Recently got myself a used laptop which is still fairly new. Acer Nitro V14 RTX 4050 with Ryzen 7 8845hs

Stock thermal paste by Acer was doing fine and could reach 42c on CPU / 43c on GPU, and was hovering around there.

Re-ordered PTM 7950 from the same previous seller. Did a repaste with full change on the even stock thermal putty with UPsiren UTP-8.

Temperature soared to 50-55 even in an airconditioned room ambient temp of 22c, thinking that it might be fake PTM this time, redo again for it and readjusted the thickness of putty and readjustment of PTM 7950.

End up same issue.

Then I notice that my heat sink is showing sign of thermal paste forming a square shape with the middle of the heatsink seems to be empty and has less contact of the thermal paste.

Silly me, must be that when I tighten down the heatsink, i press on it lightly and over screw too tight.

After rectifying all of it, here is the ambient temperature.


Will be sharing back on the feed back later with photos for my previous Acer Nitro 5 which was done almost 1 year ago. paste was still strong before I redo yesterday night.

Acer Nitro 5 AN515-52.

Idling/disable Turbo boost, under room temperature.

PTM 7950 is the only truly a good thermal solution besides LM.




This time no more retighten screws, just screw nicely and not too hard. let the sheet bond itself between the die chip and heatsink.

And true enough temperature is better.

This post has been edited by Omochao: Nov 2 2025, 04:07 PM