Hi Solam,
Unfortunately, on my Intel I7 64bit system with 6 Gigs and running Win 7, the game (Beta 0.86) is not very stable and crashes frequently. This seems to occur at or around the 70th season (turn). I've tried numerous game and OS option combinations without effect.
I have submitted numerous error reports, so maybe it will get better soon. For the time being, the game crashes so frequently and so early in the game that I can't say it's much fun to play. Your results may vary. I'll keep up with the beta's and hope the situation improves soon.