I have a chance to get 3845B220 but there is no data on the net about it. Im just speculating that sub 385 are good clockers, especially B batches.. atm mine 3850A769 is doing medi-core OC of 4.2Ghz@1.32V.. should I take a risk and bought another one and sell this one? only thng that worries me that it will not perform to my expectations