ok for X and X2 and/or X3 (if you dont have it for psx like me ) you use Zsnes or snes9x but if you have got X3 X4 X5 X6 for psx like me then you use Epsxe and i know everything will run fine for you because here are my comp specs Intel Celeron 1.2 GHz 512 MB PC-100 SD-Ram a crappy 4 MB intel onboard chip and with those stats i had epsxe running 220 fps on my games