It's all default for now (3.30Ghz Base / 4.30Ghz Boost), I am not a fan of OC'ing due to extra time it takes to tweak it to perfection. I have a large BeQuiet! AIO so not too worried about cooling it down.
I had a Geekbench score of what you posted before on 10.13.2 I think, for some reason it went down a bit, but not too worried about Geekbench. It's not a score I care about.
The 7900x for me was the perfect balance between single core performance and multicore capability. Many applications are not able to take advantage of so many cores. (at least the ones I use day to day)
For example, After Effects is garbage when it comes to rendering and previewing with multiple cores, so you have to use a python script to set a render to multiple cores to max out all your cores.