So... what are actual system requirements?

[player1]

Question for those that got the game:
What does readme says that is minimum and what optimal configuration for running this game?
(russian or EU version, it does not matter, it's the same game anyway)

Can't seem to be able to find this info online (wiki and other fan-edited sites do not count as reliable source).

Please, official info only. Either from readme, or from DVD box, if any.