Finally removed the old pink sticky thermal paste from the cpu and cpu (it was impossible with isopropyl alcohol so I used sticker remover). It turned really well. :) : r/originalxbox
Clean Thermal Paste Cpu | Remove Thermal Paste Cpu | Clean Old Thermal Paste - 5pcs - Aliexpress
Amazon.com: Giochem CPU Thermal Paste Kit 4 Grams with All Pro-Installer Kit,Thermal Conductivity: >6.5W/m-k Thermal Paste, Heatsink Past;Thermal Compound : Electronics
FML... 8 month old stock thermal compound glued my 3900x to the heatsink... CPU Came off with the prism, won't budge... miraculously the pins seem ok... tried to apply some isopropyl alcohol
Removing Thermal Compound - The BEST Way? - YouTube
How to Apply New Thermal Paste to CPU - CyberPowerPC