Frequency/Voltage Control - MSI MS-6390 Manual

MS-6390 M-ATX Mainboard

Frequency/Voltage Control

Use this menu to specify your settings for frequency/voltage control.
Auto Detect DIMM/PCI Clk
This item is used to auto detect the PCI/DIMM slots. When set to Enabled, the
system will remove (turn off) clocks from empty PCI/DIMM slots to mini-
mize the electromagnetic 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) for
overclocking purpose.
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