Considering an upgrade to prescott? Read here!
 

All 865/875 board are supposed to be prescott compatible. Turns out, some aren't!
Prescott and Upgrading : Very simply put, can you upgrade from Northwood to Prescott on your current mainboard?
The simple answer is, some of you will, and some of you won't.

All the hype that went into the Prescotts and the toaster stories turns out to be nothing more than a core upgrade. Ooh yay.