693 is Apollo Pro+, a 100 MHz chipset. It does run P-III 100-MHz-bus types as well, provided the rest of the mainboard is up to it (mind the differences in pinout and voltages).
btw, Apollo Pro133 chip is 693A, whose memory performance were exactly the same as on 694X ... if the mainboard makers would bother updating their BIOSes to support memory interleaving and such.
Regards, Peter