BIOS
Page 4-20
CPU Ratio Control
This item allows you to enable the CPU clock ratio control. Choose “Enabled” to
key in a CPU clock Ratio in the next selection.
Options: Enabled, Disabled.
CPU Clock Ratio
Use this item to select a multiplier to set the CPU frequency. See CPU Clock item
below for explanation.
Auto Detect PCI Clk
When enabled the mainboard automatically disables the clock source for a PCI slot
which does not have a module in it, reducing EMI (ElectroMagnetic Interference).
Options: Enabled, Disabled.
Spread Spectrum
If you enable spread spectrum, it can significantly reduce the EMI (ElectroMagnetic
Interference) generated by the system.
Options: Disabled, Enabeld.
AGP/PCI Clock
Enables you lock the AGP/PCI clock to a defined frequency or float with the host bus.
Options: Auto, By FSB, 66.6/33.3MHz, 75.0/37.5MHz
.
AGP clock is always double of PCI clock.
AGP clock = PCI clock x 2
CPU Clock
Enables you to increment the CPU’s clock generator at 1MHz step. This works
together with CPU Clock Ratio (above) to set the CPU operating frequency.
CPU Clock Generator x CPU Clock Ratio = CPU Frequency
For example, if you have a processor that is rated at 2.4GHz and the clock generator
is 200MHz, then 200MHz x 12 = 2.4GHz
Press <Enter> to display the following screen:
Key in the DEC (decimalism) number for the CPU clock.
