Quote Originally Posted by devsk View Post
On most CPUs, 19x and 21x are more stable than 20x. Known i7 fact!

If its a D0, you should be able to go even lower on vcore and vtt. Three D0 chips that I have gone through could do 21x191 without any voltage change. Just turn turbo on, set BCLK to 191, set memory voltage to 1.65 and timings to stock manually and you are good to go!

You should be able to work with 1.25vcore for 4Ghz.
more stable yes but a difference of 0.1V or more? that just doesn't sound right at all