Psst, so does the Genesis/SCD. It too runs a Motorola 68k CPU, has a Z80 which controls the Yamaha 2612 and Ti SN7649. The x68k sports no Z80, but a Yamaha 2151 which the 2612 is backwards compatible with. Technically, the Genesis is a superior x68k and would logically be more capable of "perfect" ports than the x68k. their both capable of "perfect" ports. dont matter how good the hardware is,its how its programmed,their aint a lot between the 2 ports,the segacd version is better because of the music,well in my opinion anyway.