>>107143702
Stock thermal paste should be good enough, but PTM7950 basically doesn't need reapplication after 5~8 years.
You're more likely to consider replacing the AIO by year 5~6.
https://www.tomshardware.com/best-picks/best-thermal-paste

Below is a link to the older thermal paste test results for Intel CPU.
https://cdn.mos.cms.futurecdn.net/P5DcVuMJJACkT7juxHAqWL.png