AMD athlon x4 630 2.8ghz
6gb ram
radeon hd 6870
I ran the game pretty well for the most part. I never checked my fps, but there was only a few times (when there was at least 40-60+ people around that I could see) where I could actually notice an fps drop. Towards the end of the end beta event was the worst, but that was when everyone started to figure out where the majority of people were killing moas so they all gathered in one spot, and I was framing pretty bad, but it was much more playable than another game I've played recently when that many people gather in one spot.