The overclocks of our card are 920 MHz core (15% overclock) and 1600 MHz Memory (28% overclock). I was able to reach those clocks, no matter if the card was in HD 6950 mode or in HD 6970 mode with all shaders enabled. A memory clock of 1600 MHz is spectacular and something I've never seen before. The highest memory clock so far was 1450 MHz on some HD 5770 cards - and those used exactly the same memory chips as the HD 6950 PCS++.
EDIT: MSI's non-ref 6950s can unlock too
Edited by sLowEnd - 3/25/11 at 8:34pm