MSI 661FM2 User Guide - Page 59

Frequency/Voltage Control, CPU Clock Ratio, Auto Detect DIMM/PCI Clk, Spread Spectrum, CPU Frequency - problem

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Page 59 highlights

MS-7060 Micro ATX Mainboard Frequency/Voltage Control Use this menu to specify your settings for frequency/voltage control. CPU Clock Ratio End users can overclock the processor (only if the processor supports so) by specifying the CPU ratio (clock multiplier) in this field. It is available only when Set CPU Ratio is set to [Manual]. Setting options: Min: [8], Max: [50]. Auto Detect DIMM/PCI Clk This item is used to auto detect the PCI slots. When set to [Enabled], the system will remove (turn off) clocks from empty PCI slots to minimize 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 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]. CPU Frequency Use this item to select the appropriate clock frequency of the CPU host bus. Setting options: [100MHz], [133MHz], [200MHz], [Default]. 3-24

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MS-7060 Micro ATX Mainboard
Use this menu to specify your settings for frequency/voltage control.
Frequency/Voltage Control
CPU Clock Ratio
End users can overclock the processor (only if the processor supports so) by speci-
fying the CPU ratio (clock multiplier) in this field. It is available only when
Set CPU
Ratio
is set to [Manual]. Setting options: Min: [8], Max: [50].
Auto Detect DIMM/PCI Clk
This item is used to auto detect the PCI slots.
When set to [Enabled], the system will
remove (turn off) clocks from empty PCI slots to minimize the electromagnetic interfer-
ence (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 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].
CPU Frequency
Use this item to select the appropriate clock frequency of the CPU host bus.
Setting
options: [100MHz], [133MHz], [200MHz], [Default].