https://wccftech.com/amd-zen-3-ryzen-5000-cpus-twice-as-fast-as-original-zen-architecture/

In their generational performance review, Golem.de has showcased that the Zen 3 architecture for AMD Ryzen 5000 CPUs achieves a massive 89% performance improvement over the original Zen architecture. A gain of this magnitude has not been seen for over a decade yet it took AMD just four years to offer nearly twice the performance of its first-gen Zen cores.

Back before Zen came to market, the industry was accustomed to the 5-10% gen-over-gen gains that Intel was delivering. Sandy Bridge being the last major performance jump from Intel while Haswell and Skylake pushed the envelope further but not in a disruptive way like Zen has done. Putting aside Zen+ which was more of an efficiency-focused architecture, each Zen core delivered an impeccable gain in IPC.