Something to add: The X3D runs hot, which you probably know. I have a Noctua NH-U14S on it, which I'm honestly not that impressed by. I guess it's an older design. Sure it's fine, but probably bad value. In retrospect maybe get a Thermalright for much less. It's not like you'll spin a 14/15cm fan as fast as a 12cm one, cause it gets rather loud when you do. The pitch of this Noctua fan is lower, but smaller fans spin faster quieter, so the size of fans seems a bit of a wash to me when it comes to noise. The 8cm fans on the GPU can go up to 2K RPM, before they start to make annoying noise, but you don't want to run the big CPU fan beyond 1.1K for the same subjective noise levels.
Single cores will boost to 4.55GHz from time to time. All core it's 4.15-4.2GHz with a power virus. If I turned hyper-threading on during Prime95, you'd bump into the 90C limit in a 20C room easily, even with an undervolt. The cooler can only handle maybe 110W with this CPU (at 1.1K RPM), but the processor wants to go to ~130W on some power virus loads, though gaming is more like 80W. My Cinebench scores aren't quite where the reviews say they should be. It's an Asus B550 Gaming F motherboard, btw, e.g. a decent mid-range board.
In order to get the temps under control / for longevity, I undervolted by 0.05V in addition to turning hyper-threading off. Temps are ~85C with Prime95 now. Stability is fine regardless of undervolt. You can even undervolt by 0.1V, but the thing starts clock-stretching or something. You think the frequencies look fine, but the Cinebench score drops more.
SkaraMinoc wrote: »You'll get more FPS and more consistent frame time with an X3D chip, especially in places like Cyrodiil which are CPU bound.
I upgraded from a 5900x to a 7950X3D and the FPS increase was substantial. Now I'm waiting for the 9950X3D to launch.
You might want to wait for the 9800X3D which is rumored to launch soon.