Icrontic created a new application to aid you in overclocking the Core i7:
Armed with the new QuickPath Interconnect, the Core i7 has a whole suite of multipliers and frequencies that make overclocking more complicated than ever. But at Icrontic, you should know we like to make technology easy. That's why we're proud to both announce and release NehalemCalc v1.0 to help enthusiasts keep track of this intricate numbers game. Keeping track of three multipliers and five clockspeeds is a dizzying task, but Icrontic is here to help.