Apparently overclocking CPUs just got more complicated. Either that, or I didn't read the entire article in full detail.
There are some interesting algorithms being thrown around, as well as them
achieving 4.6ghz on water cooling alone.
I recommend reading all of these pages because the amount of information they hand out is awesome. This will surely come in handy for people upgrading in the future.
AnandTech: Overclocking Intel's New 45nm QX9650: The Rules Have Changed
You'll notice the power consumption goes up a lot, but for these speeds, I wouldn't mind dishing out the extra power.