Frequency/Voltage Control - MSI Axis 945GM User Manual

Frequency/ Voltage Control
Auto Detect PCI Clk
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 electromag-
netic interference (EMI).
Spread Spectrum
W hen 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.
Important
1. 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, select the value of Spread Spectrum for EMI reduction.
2. The greater the Spread Spectrum value is, the greater the EMI is
reduced, and the system will become less stable. For the most
suitable Spread Spectrum value, please consult your local EMI
regulation.
Important
3. Remember to disable Spread Spectrum if you are overclocking
because even a slight jitter can introduce a temporary boost in
clock speed which may just cause your overclocked processor to
lock up.
BIOS Setup
3-19