https://arstechnica.com/gadgets/2022/03/speedy-new-5800x3d-is-amds-first-non-overclockable-ryzen-processor/ > AMD's Ryzen 7 5800X3D promises to be one of the company's fastest gaming CPUs, and it's one of the last high-end chips that will grace the AM4 socket before Ryzen 7000 CPUs come out later this year. But its experimental new 3D V-Cache stacking technology comes with one negative side effect: This will be the first Ryzen CPU that's incapable of overclocking. > According to PCWorld, AMD Marketing Director Robert Hallock says that this is because the processor's voltage limit is locked to 1.35 volts, a bit lower than other Ryzen 5000 chips. A lower voltage for the CPU cores means they'll generate less heat, presumably creating a bit more thermal headroom for the 64MB of additional L3 cache memory that the 5800X3D uses. It would also explain why the 5800X3D's clock speeds are a hair lower than the standard Ryzen 7 5800X.