Yes it's possible to have a FSB run faster than the memory speed. The
system may actually run slower, the same or faster set this way
depending on the architecture. Try it and see, it won't hurt anything.
On a side note: If the docs only list 533 as a max DDR2 speed then it's
probably not qualified to run at 667 or 800. The again it depends on
what memory devices are used and the PCB layout for the DDR2 traces.
Vendors have changed specs without a change to the die in past.
Urbez Santana Roma wrote:
If the chipset FSB supports 667MHz and chipset only supports DDR2-533
if one DDR2 667MHz or 800Mhz are connected, then FSB
can one set FSB to maximum 667?