This game only uses about 15% CPU at peak times for me (core i-7 980x) but it will use upwards of 3gb of Ram. Although I can run this game for a month without restarting it and rarely crashes. One thing I do notice, is the longer I am running the game, the faster the stamina bar refills (doesn't really refill faster, but the graphics of it do) There has to be some sort of memory issue with that.

I was one of the alpha and beta testers for this game and believe me there has been ALOT of optimizations already, and I hope they continue. I could barely get this game running with a Quad Core/8800 GTX in alpha and beta finally got to play a little. There is hope