I'd save my money if I were you; I bought it, and quite frankly its rubbish as it stands.
I have a 3.3Gb i7 with 12Gb ram and a 2Gb 285 graphics card, and I can’t get the game to run properly, the controls are intermittent and despite being patched it is unplayable as it stands. Don’t bother until they fix it, but when you consider how long it’s been in development, I wouldn’t hold my breath waiting.
Regards,
Ian.