I do have PS1 and PS2 emulator out of wich the PS2 one works at 40% of the recommended FPS and PS1 cant run any racing games. So they are just collecting dust there.
yeah sony modeled there running of playstations different to computers so you can have a really high end computer and it still not run the best.
Xbox emulators on the other hand I heard you can run some games better on a high end computer since and Xbox is basically a computer in a different box