Frequency/Voltage Control - MSI 648 Max User Manual

Chapter 3

Frequency/Voltage Control

This section describes how to set the Chassis Intrusion feature, CPU FSB
frequency, monitor the current hardwae status including CPU/system
temperatures, CPU/System Fan speeds, Vcore etc. Monitor function is available
only if there is hardware monitoring mechanism onboard.
Spread Spectrum
When the motherboard 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, setting to Enabled for EMI
reduction. Remember to disable Spread Spectrum if you are overclocking be-
cause even a slight jitter can introduce a temporary boost in clockspeed which
may just cause your overclocked processor to lock up.
Stop Unused PCI/DIMM Clock
This setting enables you to stop or activate the unused PCI slot & DIMM
clock. Setting options: Enabled, Disabled.
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