There was a good article from Arstechnica a decade ago that pointed out why you need so much more power to get perfect emulation. To get exact emulation takes a

There was a good article from Arstechnica a decade ago that pointed out why you need so much more power to get perfect emulation. To get exact emulation takes a lot of power because there are a few games which use odd tricks that are hard to document and precisely reimplement in software. FPGA emulation gets around that by more directly emulating the hardware. https://arstechnica.com/gaming/2011/08/accuracy-takes-power-one-mans-3ghz-quest-to-build-a-perfect-snes-emulator/ https://arstechnica.com/gaming/2011/08/accuracy-takes-power-...