"1GB of RAM is a requirement and depending on how gamers run this it can go two ways. One is that this can mean it needs 1GB of system RAM total. Windows XP in many cases can occupy from 280MB in relatively relaxed conditions to over 500MB in more application prone setups. As such you're really only affording 500MB to Crysis so that’s why they say it, if you only have 512MB physically, and you're using 480MB for your OS, then you're virtually allowing nothing at all for Crysis to use. From testing on higher end settings the game can scale over 900MB in memory usage on its own. With that being said, the more memory you're packing the better."
Oops closed source page - Crysis can use over 500mb of ram on its own, and thats at a minimum level. To run it on a PS3 you would need to slash that to about a third.
Oh and the reason why Crytek say it can be run on consoles is because they're trying to sell an engine. If they said that it wouldn't then they would lose a lot of potential customers!
Tease.
