I've tried both AS5 and Kryonaut thermal pastes. Kryonaut offers better noise reduction but application is trickier. I also used Gelid 1mm thermal pads, which provide good 15W/mK conductivity at a reasonable price.

> Which brand or special product is top recommended? Honestly just go with Arctic. Any of their stuff is gonna be way better than the factory application Sony uses. I remember opening mine up when it started sounding like a jet engine... total nightmare. I didnt want to spend a fortune on those tiny high-end syringes that cost like 15 bucks for a single use. I just grabbed a big tube of Arctic because they are always reliable for my other gear. Its been running silent for months now. You get way more value for your money and honestly the performance difference between brands is pretty small for everyday gaming. It works, its cheap, and you wont run out after one try if you mess up the application a bit.

https://www.amazon.com/Thermal-Grizzly-Kryonaut-Grease-Paste/dp/B011F7W3LU?------123456890?7649-20

Thermal Grizzly Kryonaut is recommended.