What's in the Box: Sony Releases Final PS4 Spec Sheet - PlayStation LifeStyle
Sony unlocks more CPU power for PS4 game developers | Eurogamer.net
PS4 Pro specs: 4.2 TFLOPs, Jaguar CPU, 310W power draw | TweakTown
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