MSI NF725GM-P31 - Manual (Page 27)

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MS-7597
auto disable PCi/PCi-e Frequency
When set to [enabled], the system will remove (turn off) clocks from empty PCi
and PCi-e slots to minimize the electromagnetic interference (eMi).
CPu Vdd Voltage (V), CPu-nB Vdd Voltage (V), nB Voltage (V), Ht Link
Voltage (V)
these items are used to adjust the voltage of CPu, Memory and chipset.
Spread Spectrum
When the motherboard’s clock generator pulses, the extreme values (spikes) of
the pulses create eMi (electromagnetic interference). the Spread Spectrum func-
tion 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, set 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 clock speed which may just cause your overclocked proces-
sor to lock up.
iMPoRtant
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.
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.
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.
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