Its goal for accuracy means it only supports the BIOS of one console revision per region, and is also very demanding, having recommendations to use a quad-core Intel Haswell CPU with a base frequency of >= 3.3GHz and a turbo frequency of >= 3.7GHz (e.g. It's currently the most accurate but runs from the command-line (obviously it'll have video output though) unless using an external frontend like Mednaffe or a libretro frontend like RetroArch.

Comparisons Mednafen An open-source, multi-system emulator with an original Saturn core.