automatically change in accordance with the setting of Adjust DDR M emory
Frequency. Please note you must reboot the system to let the change take effect.
Setting options: [100 MHz], [133MHz], [166MHz], [200MHz].
Adjust CPU FSB Frequency
This item allows you to select the CPU Front Side Bus clock frequency (in MHz)
and overclock the processor by adjusting the FSB clock to a higher frequency.
Setting options: [200]~[320]
Adjust PCI Express Frequency
User can place an artificial PCI Express clock limit on the system. Setting options:
[100]~[200].
Ratio/Vcore Change
This field allows you to select the CPU Ratio. Setting to [Auto] enables CPU Ratio
automatically to be determined by SPD. Setting options: [Auto], [Manual].
Adjust CPU Ratio
This item allows you to adjust the CPU ratio. Setting to [Startup] enables the
CPU running at the fastest speed which is detected by system. Setting options
are: [Startup], [x4]~[x25].
CPU Voltage
The settings are used to adjust the CPU clock multiplier (ratio) and CPU corevoltage
(Vcore). These settings offer users a tool to overclock the system.
M emory Voltage
Adjusting the DDR voltage can increase the DDR speed. Any changes made to this
setting may cause a stability issue, so changing the DDR voltage for long-term
purpose is NOT recommended.
LDT Bus Voltage
This item specifies the maximum operating frequency of the link's transmitter clock.
Setting options: [1.20], [1.25], [1.30], [1.35], [1.40], [1.45], [1.50].
Auto Disable PCI Clock
This item is used to auto detect the PCI slots. W hen set to [Enabled], the system will
remove (turn off) clocks from empty PCI slots to minimize the electromagnetic inter-
ference (EMI). Settings: [Enabled], [Disabled].
Spread Spectrum
W hen the motherboard's clock generator pulses, the extreme values (spikes) of the
pulses creates EMI (Electromagnetic Interference). The Spread Spectrum function
reduces the EMI generated by modulating the pulses so that the spikes of the pulses
are reduced to flatter curves. If you do not have any EMI problem, leave the setting at
[Disabled] for optimal system stability and performance. But if you are plagued by EMI,
activate the Spread Spectrum for EMI reduction. Remember to disable Spread Spec-
trum if you are overclocking because even a slight jitter can introduce a temporary
User's Manual
E-23