Radiation hardened CPUs usually use established ISAs / core designs, but they are specially adapted and hardened for space use. It’s not like they’re using the

Radiation hardened CPUs usually use established ISAs / core designs, but they are specially adapted and hardened for space use. It’s not like they’re using the same physical chip as a PlayStation (especially as the PlayStation CPU is custom silicon with stuff like a geometry unit and motion JPEG decoder on chip, it’s not just a standalone R3000).