The highest clock rate on mine is stock (1200) - I don't support any overclocking, only underclocking, as I don't have the source to cgminer so can't modify it in the same way Emdje does on his.  So for right now you've got a choice between functionality and working on all (my latest A2's didn't work with his firmware) terminators on mine, and overclocking on most terminators on his...