I have used the DFI Infinity 875P board for this OC test and it is quite a good board for overclocking. By using the Scythe's Kamakaze cooler with a slight increase in VCore from 1.38V default to 1.45V, the highest clock speed i can hit was 4.2Ghz and the best stability of the P4 3.2E can be maintained at around 3.8Ghz under load. This is compared to the ~3.8Ghz i got from the P4 Northwood 3.2Ghz with stable speed at 3.65Ghz under load. Prescott is certainly hot when overclocked therefore it is hard to maintain stability under load at higher clock speed. However, if you can find ways to cool it down properly using other methods like water cooling or phase-change, i am sure Prescott can scale up very well.