Quote Originally Posted by virtualrain View Post
Craig, So are you saying the SB voltage being too high was causing the shutdown? At what point does the SB voltage cause this?
On my rig 1.74 - 1.76v

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.
I have been up to 1.76v in the attempt to find stability so reducing to 1.62v imo is significant. Also 1.62v is one maybe 2 clicks over what I need to run stable.

I found Tonys guide interesting to read but that was it. None of his findings or settings have benefited me & my rig this time.

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.
My rig would not boot over 1.51v NB with strong CPU drive strength unless I had the SB voltage over 1.7v

My 1.57v atm is one or 2 slicks over what I need for 450fsb too.

It sounds like you agree with this (Tony's guide re cpu drive strength/nb voltage) although I still maintain your NB voltage is not very high at all for the FSB you are running.
I do agree with Tony with an E6400 but wonder how this may differ with a quad core. I notice you are running high v NB with your quad @ 400fsb my E6400 rig will run 490fsb (thats as far as I have taken it) with lower NB voltage than you are using.

Regards

Craig.

P.S Sorry to post a slow reply but I don't get email notifications from this forum although I have it enabled it just don't work for me.