I'm putting together a PIII 450 with a BIOSTAR M6TZA ZX M/B..
In the BIOS setup, I was able to choose from a selection of FSB/PCI speed options. These options were: 100/33 , 112/37, 124/31, and 133/33. Everything worked great until I decided take out the Savage 4 AGP card that I got with it...