As far as i remember, the unlocks on the 4th core on 720BE were not stable in all cases...Ain't it? Read that article in Anandtech.com...
So, i doubt what's the case with this one! The unlocks are possible with only a very few select batches or with all! And even if it is for all, is it the other two are healthy cores disabled or bad cores disabled for good by AMD!!! :huh: