I'm now at 8x399 with most options set to AUTO and it seems to work ok. Just been gaming for an hour and S-pi also ran ok. As soon as I put the FSB to 400 windows hangs just before getting to desktop (Vista x64) to see if the AUTO trick would show some more magic I raised the FSB to 451 but then it crashes just as soon as you see the windows vista logo which is right before desktop. I increased vcore to 1,40 but no effect, then increased NB voltage to 1,64 but same crash. It just seems like none of the settings I change has any effect on stability.

Eppikk perhaps you can post your settings (or are they here somewhere already?) perhaps some pics. I'm also interested in CPU and NB skew. Tony from OCZ says to keep them around 300ps (CPU) and 200pc (NB) when between 400 and 500 FSB.

what prog can i use to check the voltage settings at AUTO? Perhaps I can check and compare settings between the various auto settings.

Perhaps I should just sell my Q9450 and buy a E8600 and let it rip.