MSI MS-6380 - Manual (Page 77)

AWARD ® BIOS Setup
3-33
overclocked processor to lock up.
CPU Host/PCI Clock
This item specifies the combination of CPU host bus (FSB) and PCI bus
frequency and provides a method for end users to overclock the processor
accordingly. If the CPU clock is set to 100MHz, you are allowed to select
any option between 100/33Mhz and 124/31Mhz for CPU Host/PCI Clock.
If the CPU clock is set to 133MHz, you can set the item from 133/33Mhz
through 154/39Mhz.