The AMD Ryzen 9 5950X has already shown its overclocking potential with an all-core boost clock of 6.362 GHz. The Vermeer processor has pushed past the 15,000 mark in Cinebench R20 too, albeit at 1.692 V and on LN2 cooling.
https://www.notebookcheck.net/The-AMD-Ryzen-9-5950X-hits-over-6-3-GHz-and-15-000-points-in-Cinebench-R20.502596.0.html