This board support the 1333 Mhz Core2 Duo processors.
My friend (and me later on) have the Intel E6850 processor 3.0 Ghz and 1333 FSB). Installed memory is OCZ Gold PC2 5400 dualchannel @ 4-4-4-12

If you have an Asus P5W DH board with a bios earlier than the 2103 version, it give a microcode error during boot, but you can bootup to flash it.
Just install bios version 2103 or higher with the EZ-Flash feature.
In the bios, one setting have to be turned off and that is the Hyperpath3 option.