My buddy Kyle at HardOCP posted a quick overclocking test of the 2.4 GHz Prescott processor.  Using just stock cooling and voltages, he was able to get this baby to 3.2 GHz but with some liquid cooling, he was able to get it to 3.7 GHz, which is quite impressive.  Even the temperature numbers seemed better than expected.
Quite frankly, we were expecting to have to get out the fire extinguisher, but that was not even close to the case. Our Koolance Exos has a temperature sensor in the heatsink, albeit poorly placed, and this temperature showed to stay in the low-90s on all of our boards. This CPU was easily not running as hot as the CPUs that we sampled for testing from Intel at the release of the Prescott core and during our first overclocking adventures. Our 2.4A was showing 99F at idle and 114F under load at 3.7GHz and 1.6v.