BIOS Setup
Frequency/Voltage Control
Use this menu to specify your settings for frequency/voltage control.
Auto Detect PCI Clk
This item is used to auto detect the PCI slots. When set to Enabled, the system will remove (turn off) clocks from empty PCI slots to minimize the electro- magnetic interference (EMI). Setting options: Enabled, Disabled.
Spread Spectrum
When the motherboard’s clock generator pulses, the extreme values (spikes) of the pulses creates EMI (Electromagnetic Interference). The Spread Spec- trum 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, setting to Enabled for EMI reduction. Remember to disable Spread Spectrum if you are overclocking because even a slight jitter can introduce a temporary boost in clockspeed which may just cause your overclocked processor to lock up.
CPU Clock
This setting specifies the clock frequency of the CPU host bus (FSB). It pro- vides a method for end users to overclock the processor accordingly.