Expected to cost around US$160, the AMD Ryzen 5 2500X is almost as fast as the Intel Core i7-7700, while the cheaper (around US$130) Ryzen 3 2300X delivers about the same performance as the Intel Core i5-7600K. Both chips are manufactured using a 12 nm process and have a maximum clock speed of 4 GHz.
https://www.notebookcheck.net/AMD-Ryzen-5-2500X-and-Ryzen-3-2300X-hit-Geekbench-with-up-to-4-GHz-boost-and-impressive-performance.309034.0.html