Quote Originally Posted by C-N View Post
Right after a full days worth of messing about I have found out what was causing the shutdowns it was the SB voltage.

I initially upped the NB & SB voltage almost together with the CPU drive set on strong as its the only way the board would boot. I have now found by switching the CPU drive to weak I can significantly reduce the SB voltage needed yet it will still allow me to up the NB voltage.
Craig, So are you saying the SB voltage being too high was causing the shutdown? At what point does the SB voltage cause this?

Also, I'm not sure I understand your SB voltage comments... on one hand, you are saying you can significantly reduce the SB voltage, but in your settings in your next post it's at 1.62V. a) that's not significantly reduced (although I'm not sure where you had it before) and b) 1.62V for the SB is what Tony's overclocking guide recommended.

Another thing, you say running weak CPU drive, allows you to up the NB voltage, but according to your setting, you are running 1.57 which after the droop is about 1.45 actual... not that very much for 450+ FSB.

Finally, Tony had this to say about CPU drive strength...

If the CPU needs Strong Drive you will have a low to middle NB voltage setting.
If the CPU needs Weak Drive you will have a middle to higher NB voltage setting
It sounds like you agree with this, although I still maintain your NB voltage is not very high at all for the FSB you are running.

Some additional clarification on what you have found would be helpful... Thanks!