my chip is batch 3223b989. ive validated it at 5.55ghz 4c/8t on water 1.75v and its living.
http://valid.canardpc.com/cache/screenshot/2596941.png
did 3dmark 11 @5ghz on the nose w/ 1.56v, runs 2666mhz memory just fine 24/7 but anything higher i cant get. this chip is also delid
going to be looking for a better chip here in the next few months.