I didnt know it had that much processing power to even run psx and N64. Does anyone have a project guide for this? Maybe you can point me to please and thank you.

I wanted to build one that runs (NES, SNES, SEGA, GBA, N64, PSX), I do run them on my pc. Is this even possible to do?

Hey All,
I am very new to all of this, but I would love to get started.
Question : Whats the best system to start. ( I am a Super NES Fan)
Any Advice is accepted.