Comment by masklinn

> SNES is so old I wonder why you couldn't get away with CPU-only.

Depends what level of accuracy you want. higan (bsnes) does cycle-accurate SNES emulation on the CPU (and has for more than a decade) so that's definitely feasible.

If you want accuracy beyond that things get dicey. AFAIK when you get down to transistor level emulation, you can do pong but MetalNES runs nowhere near real time, so the limit for that is somewhere between those two systems.