Since the 386 moved to the 486, the only intel chip that it's successor was able to use the same motherboards was the PII to PIII, and that wasn't that big of a CPU change.
So, my guess, is that the 478 sockets will work for the 133 FSB Northwoods, but not Prescott.
Bad trolls Bad trolls... Whacha gonna do... Whacha gonna do when they post here too...