Ryzen 9 5950X is working out really well.
Ended up simply toggling on Performance Boost Overdrive 2, raising the max boost by 200MHz (5.1GHz) and slightly undervolting with Curve Optimizer.
It automatically boosts to ~4.6GHz for multi-core workloads and 5.1GHz for single core.
Conversation
It can get up to around 4.8GHz in some cases for a less demanding multi-core workload but for compiling and most other tasks it tends to stay right around 4.6GHz.
Full multi-core AVX2 workload tends to hover around 4.0 to 4.1GHz.
None of that is manual, just their auto scaling.