backup isn't needed these days if you just want a means to play the games. The PS2 emulator on the PC is already at a decent enough stage as far as compatibility is concerned, and PCs themselves have already advanced to the point that speed is no longer a concern.
Add the fact that the PS3's sixaxis can be used on a PC means that you can get a pretty similar experience if you have a midrange PC (I'm getting a lot of mileage out of a low end Ivy Bridge pentium, using its integrated graphics chip)
