You probably have a Katmai. If so, your BIOS will show the core at 2.0V. To O/C, increase the FSB. Your Soyo mobo works great with SoftFSB using Target clock generator IC-Works W196x. Increase the FSB setting by setting. When it doesn't work, reboot and increase the core voltage to the next setting. It's that easy. Get SoftFSB here:
A Katmai should be good for around 620 MHz with good cooling. So, the top FSB you're likely to hit is around 124 MHz. If you can get to 124 MHz, that'll get you to the 1/4 PCI divider which will get the PCI back to spec. Use the 124/31 setting in your BIOS.
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