So,to confirm what you achieved in your first run.
Did you put the FSB @ 440 and you upped the multiplier from 9 to 10?

Also excuse my ignorance, but what does genereate more heat, cranking up the multipier or the FSB.

I got an QX9650 coming tomorrow, so I'm looking for the perfect combination between multi X FSB and Vcore. What do you think is the sweetspot?