Yes

Low - 1th, Nominal is 1.1 semi turbo is 1.25

We've incorporated a shell app which allows for voltage adjustments, on the correct voltage the above can be achieved.  But please not we find that usually 1 our of 8 chips have a few missing/failed cores right off the trey. So its possible one module will have 8 chips at 254 vs 8 chips at 256.