some reference for you, seems like a good replacement to paste like even Grizzly Kryonaut

https://forum.lowyat.net/topic/5248294

I have applied the PTM 7950 to several GPUs and laptop CPUs this past year. Compared to the other thermal paste that I have which is the CM Mastergel Pro V2, the PTM 7950 usually have around 4c better results. Application is fiddly though as there's 2 layers of plastic you need to remove on the material using tweezers or something similar.

I haven't used this on desktop CPUs though, they are expensive and desktop CPUs have much larger surface area.

EDIT :

Aside from the drop in temperatures, I also noticed the boost clocks are a bit higher as well especially on my laptop. YMMV depending on your specific designs.

Thermalright Heilos is said to be a PTM7950 OEM

I’ve just bought a large 80mm x 160mm strip of PTM7950 and will be applying it to multiple CPUs and GPUs.
Original price is RM84.27 before shipping, but I bought it for RM58.76 after vouchers & coins from Lazada

Link: https://s.lazada.com.my/s.lSPfi

A bit of correction: Lenovo uses a paste variant of the PTM7950, known as the PTM7958-SP, and they also use it on a few high end IdeaPads as well:
https://download.lenovo.com/consumer/mobile..._5_16_9_hmm.pdf

Note: I work for a company that handles HP(E) and Lenovo equipment