Got hold of a 2x4GB Klevv DDR3-1600 kit recently.
Turned out to be based on Hynix 4Gbit MFR. As you would expect on a low bin, the MHz/volt scaling could be better. However, due to decent tRCD/tRP limits and voltage tolerance, could fully stabilise my sample at 1400 11-13-13 and 1500 12-14-14.
Some scatter SuperPi 32M runs just for the hell of it: