Nice review and some good RAM performance, if you give it a little more voltage like 1.435V you may be CL30? But will likely need a fan on it to keep it cool. I run mine at 1.6V CL 28 for example with a 60mm fan on top of it on my 7950X with 64G A-Die
If you got 6400 2133 stable then your pretty much maxed out best to stay there and get the best timings
Do you mind running the “10G CFD Only” benchmark form this thread, can download from link in 1st post:
Note that you will likely need to manually get to process affinity to 55555555 to get decent result on scheduler in Win 11 uses HT and that hurt performance so its necessary to force HT off.
FYI with similar memory timing I get about 28m 18s on my 7950x and just under 18m on my 7960X