Not sure, this is all he said:
also, I have been able to get the sst kit to cooperate at 2133 7-8-7-20 yes alot of sticks wont make the grade, however its all about how you finness it in the end.
IMO it was a lower bin kit. 1700 6-6-6 1.7v is not impressive, 1800 6-6-6 needed 1.82v whereas my 2000 C7 does 1800 at 1.71v