Guys I have been trying to figure this out for a couple of days and can't seem to pin point the problem. The problem is when I was just running my one 7970 on milkyway I was getting over 300k per day. Now I am running the 7970, 6950, gtx570hd, and 2 gtx760's and I am only getting 400k per day. I have all of them running 4 wu's at a time and I am out of ideas.