Benchmarks comparing the PS4 Jaguar CPU to the PS5 Zen CPU show what a massive upgrade the PS5 is for devs, they had regularly expressed frustration at last gen's weak CPU capability
The APUs: Kabini, Temash, Xbox One & PS4 - AMD's Jaguar Architecture: The CPU Powering Xbox One, PlayStation 4, Kabini & Temash
AMD Jaguar, entendiendo al procesador detrás de la XBox One y la PS4 - Tecnogeek