Interesting, my 5800x3d will do -30 across all cores no problem
Silicon lottery bro. Most do but not all.
It’s the same with boost. The X’s that will do -20 but only boost to 4.8.
Mine will boost to 4.95 on auto, and can do 5ghz easy so I think boost will also affect CO as more boost will need more power.
If you set -30 don’t forget to monitor your cpu speeds. As you don’t want to lose performance. It’s a balancing act