With the 60GB version now 'sold out', the 80GB version of the PlayStation 3 is quickly going to be the only option for consumers in stores. Besides the hard-drive size, though, the two systems have another fundamental difference: the 80GB unit handles backwards compatibility with software and not hardware. What games work on the two console versions is now a bit trickier. To aid in your comprehension, Joystiq notes, Sony has released a handy online game checker to let you know how your library will fare. Over at Curmudgeon Gamer, they have an examination of a game library looking at both a PS1 collection of titles and a group of games from the PS2 era. Assuming this random sampling to be in any way indicative, it looks like there isn't much difference between software and hardware compatibility for PS1 games ... but PS2 games might not have an easy time of it.

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