What's the maximum CPU upgrade for my old Jetway BX133 board?

manko

Golden Member
May 27, 2001
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The old manual says up to 600Mhz Pentium III, but I'm hoping it will take something faster. The board can take either a Slot-1 or Socket 370 CPU and currently is running a Celeron 400 (Socket 370) chip.

The board is based on a VIA VT82C693A Apollo BX133 chipset. The manual gives the following jumper options:

CPU Freq: 66 - 150MHz
Ratio 2.0x to 8.0x (in 0.5 increments)

Going by those numbers 8x100 = 800Mhz or 8x133=1064Mhz, I'm guessing it would take up to an 800Mhz Celeron or 1GHz P3. Am I close?

What I don't know is the voltage settings of the chipset or those CPUs. Does anyone have any ideas? (The board was designed for PII-266 to PIII-600 chips, so what type of voltage range would that be?) I want to avoid buying a Slocket/Slot-key or Powerleap, if possible.

Thanks for your help.