I really do miss this old regime of utilizing the entire machine in games. There is a fantastic video of one of the original Naughty Dog developers talking about the optimizations they did for the original Crash Bandicoot (<a href="https://www.youtube.com/watch?v=izxXGuVL21o" rel="nofollow">https://www.youtube.com/watch?v=izxXGuVL21o</a>), and some of the less conventional tricks they did to enable 3D gameplay on the PS1.
I've always wondered what the true limit of performance optimizations is in games. Obviously modern systems have a lot more systems to compete and share memory between, but there have been obvious cases where performance has had low priority. Also under consideration is the constantly morphing landscape of PC hardware and software architecture.
Given a fixed hardware, like the PS5 or Xbox, with the hardware of a high end gaming computer, what is the true limit a game could reach.