The reason some guys can air bench at almost 5.5Ghz (on Intels Burrage mobo) and others at only 4.8-5.2Ghz (on Asus, Gigabyte, mobos ect) is due to a setting thats
only available on the Intel P67 boards at the moment. Its called
"Internal PLL voltage Override". Hopefully all OEM Motherboards will have this feature via a bios update upon official release.
OCM