What models of PS3 are backwards compatible

20gb and 60gb and 80gb.
If you want to know more information read below!
The 20 and 60 has the most backwards compatibility.
The 80 can't play all ps2 games because of (software emulation).
If you want to play more ps1 games then ps2 games then buy the 250gb ps3.
The ps3 slim can't play ps2 games.
The ps3 slim can only play ps1 games.