Frequency/Voltage Control - MSI 650GLMS User Manual

BIOS Setup

Frequency/Voltage Control

Use this menu to specify your settings for frequency/voltage control.
Set CPU Ratio
This setting controls the multiplier that is used to determine the internal clock
speed of the processor relative to the external or motherboard clock speed.
Auto Detect DIMM/PCI Clk
This item is used to auto detect the DIMM/PCI slots. When set to Enabled,
the system will remove (turn off) clocks from empty DIMM/PCI slots to
minimize the electromagnetic interference (EMI). Settings: Enabled and
Disabled.
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 because even
a slight jitter can introduce a temporary boost in clockspeed which may just
cause your overclocked processor to lock up.
DRAM Frequency
Use this item to configure the colock frequency of the installed DRAMs.
Settings: 100MHz, 133 MHz, By SPD.
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