It's finally time to review AMD's new 3rd-gen Ryzen processors. The Ryzen 9 3900X is a 12-core, 24-thread processor with a massive 64MB L3 cache. It costs $500, placing it in direct competition with the Core i9-9900K. Then the Ryzen 7 3700X costs $330 and AMD suggests it's taking on the more expensive 9700K.
https://www.techspot.com/review/1869-amd-ryzen-3900x-ryzen-3700x/