Hi
it probably wouldn't. If the processor runs at 1.25GHz on a 167MHz bus, the bus multiplier on the CPU daughter card must be set to 7.5 (7.5 * 166.6MHz = 1.25GHz).
Installed on a logic board with a 133MHz bus, it would probably run at 1.0GHz (7.5 * 133.3MHz).