I wonder where they got that sample from. Can even be an separated model from binning, which would explain the high voltage requirements for 45nm.
Super Pi 1m does not say much about stability, but a +10% boost in that benchmark looks good.
The results in terms of voltages and frequencies look similar to 9950BE's on the edge. Good to see the chip can handle high voltages at 45nm. I think they did not look for the lowest possible voltages they simply started at 1.225V.
It's a nice glimpse, but to reason anything beside an speed boost in super-pi out of this preview is useless.