Idk much about opteron 185 steppings, but I would assume so if 3GHz is stable. Maybe check out this
. My 170 was a CCB1E 0550VPMW. Unfortunately, there's not much specific info on 185s due to their high price a while back, most people chose the cheaper 170s and 165s. Now that the 185's price has dropped considerably, the interest isn't there.