AMD Ryzen 9 3900XT @ TechPowerUp
 

Ryzen 9 3900XT is the flagship of the new AMD Ryzen XT series. It comes with higher boost clocks, and can sustain them better, which helps with single-threaded workloads. In our Ryzen 9 3900XT review we also saw better overclocking and lower temperatures than on the original Ryzen 9 3900X.

https://www.techpowerup.com/review/amd-ryzen-9-3900xt/