I have already completed the initial quick tests while playing MSFS 2020.
- Ryzen 7 7800X3D, MSI MAG X670E Tomahawk WIFI, 64GB (2x32GB) 6200 tweaked
VS - Ryzen 7 9800X3D, MSI MPG X870E Carbon WIFI, 64GB (2x32GB) DDR5 6200 tweaked
MSFS 2020 Ultra settings, 2k, TAA, LOD 200/200
Ryzen 7 7800X3D
Ryzen 7 9800X3D
The average temperature drop of 20 degrees is something I really liked 
edit
Please note that the testing software I used incorrectly displays the clock speed of Ryzen 7 9800X3D.
@DrVenkman3876 rightly pointed this out and I wanted to make you aware of this discrepancy.