This thing is unstable ugly!
I've tried different sticks of RAM and various timings and nothing works just ups and reboots after anything is running load for any period of time. I've only seen it stable on the 2nd day I had it. I swear it folded all night at 2.4G but later when I was messing around with the clocks I found it at 2.2G.
On F3 (final release and Beta) if I as much as touch manual ram timings, beeeeeeeeep! No recovery, no post.