Intel has a few processors that allow use at 800MHz FSB and 1066MHz FSB. The Asus board unlocks nothing, Intel ships the processors with 2 available multipliers.
The P4s that ship with 1066MHz FSB support are the ones Intel ships with 2 multipliers unlocked. And it looks like most of those have dried up like the "F" processors... the 1066MHz FSB ones disappeared since Intel decided to make that an EE feature. Dumb move.
SWEET i flashed to the 1020.1 beta bios and it unlocked it to 14x im now running a 270mhz fsb wich gives me 3.78ghz the pcmark scores are about the same as when i had it at 239fsb=4.06ghz but my temps are lower and if im not mistaken games like high memory bandwidth.