User`s manual

BIOS Setup 57
MI-110
4.9 Frequency/Voltage Control
Auto Detect PCI Clk
This allows you to enable or disable auto detect PCI clock.
Options: Enabled, Disabled.
Spread Spectrum
This setting allows you to reduce EMI by modulating the signals
the CPU generates so that the spikes are reduced to flatter
curves. This is achieved by varying the frequency slightly so that
the signal does not use any particular frequency for more than a
moment. Options: Enabled, Disabled.
CPU/Host/SRC/PCI Clock
Options: Default, 133/100/33