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Frequency Control
The following table describes the parameters found in this menu. Settings in boldface are the default and
suggested settings.
Parameter
Set CPU Ratio
CPU Clock Ratio
Auto Detect DIMM/PCI Clk
Spread Spectrum
DRAM Frequency
Chapter 2
Description
End users can overlock the processor by
specifying the CPU ratio (clock multiplier) in this
field.
If the CPU Ratio is set to Manual, end users can
choose a suitable ratioto support the CPU.
This option allows you to enable/disable the
feature of auto detecting the clock frequency of
the installed DIMM/PCI bus.
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,
setting to Enabled for EMI reduction. Remember
to disable Spread Spectrum if you are
overlocking because even a slight jitter can
introduce a temporary boost in clockspeed which
may just cause your overlock ed processor to
lock up.
This setting let end users select the DRAM
frequency.
Options
Auto
Manual
8x to 50x
Enabled
Disabled
By SPD
200 Mhz
266 Mhz
333 Mhz
42
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