I am trying to configure CPU settings with a Pentium MMX 233 MHz CPU on a PCChips M585LMR (v 1.2).

No matter what multiplier I set on the BIOS, it works at 2x with the selected bus speed. Same issue on "Auto : 233 MHz P55C" and "Manual" mode.
Ex : If 3.5x @ 66 selected , CPU speed is 2x66 = 133 MHz

I cleared CMOS from jumper etc but still nothing changed this behaviour. I am wondering whether this is a some so called weird thing happening with PCCHIPS.

At last, I set 2x @ 124 MHz (MB supports 60 - 124 MHz bus speeds), CPU then runs at 250 MHz. Is this a safe thing to do as it supposed to be run at 3.5x @ 66 ?