It depends on how large the games are in data.
Yes all PS3 can play any PS3 games if the have current updates which includes the latest 3D games
Yes the Playstation games will play on all PS3 models
Yes all PS3 consoles play PS1 games and do so through software emulation
All PS3 models play PlayStation 1 Games and do so through software emulation.
I believe all PlayStation 3's are Region free, but maybe not
You don't. The 40 GB PS3 is not one of the PS3 models with Backward Compatibility. Sony claims that there is not anything you can do to allow it to play PS2 games. see related link
Unfortunately, Sony has not added that to the PS3 Slim. If you want to play PS2 games on a PS3 you might want to try a PS3 40 or 60 GB system.
The playstation 3 games are better and if your planning to play online, ps3 is better unless you are super rich to pay at least 40 bucks a year and will risk the xbox to be broken and send it in. Ps3... no problems at all and its free multiplayer
The 40 GB model does not play any PS2 games
i would say on ps3 up to 40 dollars
You can't. If you want to play PS2 games on a PS3 then you have to Purchase an old PS3 with 4 USB ports and hope it doesn't break.
Yes (both PS1 and PS2) if you have the 60gb version. The 40 wont. Please note you can play PS1 games through your PS3, on your PSP (remote play) but not yet PS2 games.