MSI 400 User Guide
Bios Setup
4-21
Use this menu to specify your settings for frequency/voltage control.
Frequency/Voltage Control
Auto Detect DIMM /PCI Clk
To reduce the occurrence of electromagnetic interference (EMI), the BIOS detects
the presence or absence of components in DIMM and PCI slots and turns off system
clock generator pulses to empty slots.
To reduce the occurrence of electromagnetic interference (EMI), the BIOS detects
the presence or absence of components in DIMM and PCI slots and turns off system
clock generator pulses to empty slots.
Spr ead Spectrum
W hen the motherboard
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,
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 processor to lock up. Setting options:
[Enabled], [Disabled].
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 processor to lock up. Setting options:
[Enabled], [Disabled].