By coincidence, I have the same CPU and it seems to do the job well.
In my case I have a 3080ti and 32GB of DDR4 RAM.
I would think that to update to either of your proposed replacements will necessitate the purchase of a new motherboard and RAM as well as the CPU.
The improvement in MSFS performance for such a large expense is unlikely to be cost effective, or indeed pleasing.
Possibly, it might not even be noticeable.
In the MSFS2020 climate, I’d be going with the 7900X3D as it is main thread hungry and the X3D chips with their faster cache is ideal and outperforms the intel’s.
That said, we are close to 2024 which may change the way underlying CPU architecture is utilized.
If it were me, I’d sit tight and see what 2024 does.
thanks for info guys, yeh i read about the X3D chips being best for msfs, but like you say, 2024 is around the corner it seems so maybe i should hold off until then.
To be honest past month or so I’ve almost bit the bullet a few times to replace my cpu/mobo/ram so this will be a good excuse to do so!