https://wccftech.com/amd-confirms-no-overclocking-for-ryzen-7-5800x3d-cpu-only-memory-fclk-overclock-enabled/

AMD's Ryzen 7 5800X3D will be the first consumer CPU to feature 3D V-Cache but the addition of the new technology means that it will have to sacrifice some key features such as overclocking support.

In an interview with Hothardware, AMD's Director of Technical Marketing, Robert Hallock, once again revealed some interesting details regarding the upcoming Ryzen 7 5800X3D CPU. The rep, answering a question to AMD hardware enthusiast, Michal Simonek, on whether the chip would support overclocking or not, Robert replied that it wouldn't and for good reason too.