ive only tried the snes emulator for dc and it is playable, but not full-speed. with a little tweaking, i can get my p2 266 laptop with 64 megs of ram and a 4 gig hd to run zsnes fullspeed in DOS, most mame games fullspeed in DOS, and neogeo games practically fullspeed in NeoRAGEx. if you want an emu box in your arcade, but dont want a pc, i would suggest getting an xbox. sure, a dc is a capable machine, but you can honestly accomplish much more with the pc you already have.