Quote Originally Posted by Spyrus View Post
So do i need 1.7V? Because lower do not help it cannot boot.
Moving from 1.7Vnb to 1.825Vnb on the Gigabyte X48T-DQ6 ( "X48" chipset ) allowed me to run SuperPi 32M at PL6 when with 1.7Vnb best I could do was 8.

The same thing ( more NB voltage helps with PL ) applies to X38/P35/P45.

As long as you can keep the chipset cool, 1.8V-1.85V will be fine.