Just one thing to keep in mind, though, is that several SNES cartridges includes extra chips to emulate. I believe that Star Fox/Starwing, for example, is an extra 20-30 MHz to emulate, and there are games like Star Ocean which uses texture decompression or something like that. Basically, while a SNES is very possible on the Nspire, certain games might not necessarily run at full speed if the requirements for those specific games (mostly Super FX games though) is on-par with the GBA.