3 - 20
VC15 Mainboard Manual
Frequency/Voltage Control
Spread Spectrum
This feature is used to set the spread Spectrum to be center spread type or
down spread type. The options are: Disabled, +/-0.25%, -0.5%, +/-0.5%, +/
-0.38%,
CPU Clock Ratio
This feature allows you to select the frequency mulitplier for CPU host
clock. The option list offers the ratios from X 8 to X 23.
Auto Detect DIMM/PCI Clk
When enabled, BIOS will detect the PCI slot and DIMM slot. If no any
device in, BIOS will auto disable its clock.
The options are: Enabled, Disabled.
CPU Host/PCI Clock
This feature allows you to select the combinations of CPU/PCI clock fre-
quency. The default setting, Default, will detect your CPU/PCI clock fre-
quency automatically. If you set a unappropriate option which leads to a
booting problem, keep pressing the Insert key until the display appears
will solve it. The options lists all combinations that provided by the sys-
tem BIOS.