MSI X58M - Manual (Page 68)

3-22
BIOS Setup
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MS-7593 BIOS Setup
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MS-7593
CPU Ampltude Control/ PCI Express Ampltude Control
These tems are used to select the CPU/ PCI Express clock ampltude.
CPU CLK Skew/ IOH CLK Skew
These tems are used to select the CPU/ IOH chpset clock skew. They can help
CPU to reach the hgher overclockng performace.
Adjust PCI Frequency (MHz)
Ths field allows you to select the PCI frequency (n MHz).
Adjust PCI-E Frequency (MHz)
Ths field allows you to select the PCIE frequency (n MHz).
Auto Dsable DRAM/PCI Frequency
When set to [Enabled], the system wll remove (turn off) clocks from empty DIMM and
PCI slots to mnmze the electromagnetc nterference (EMI).
CPU Load Lne Calbraton
When set to [Enabled], system wll automatcally fix the vcore droop ssue of CPU, and
the CPU can receve stable voltage n overclockng.
CPU Voltage (V)/ CPU Vcore/ CPU PLL Voltage (V)/ QPI Voltage (V)/ DRAM Voltage
(V)/ DDR_VREF_CA_A Voltage (V)/ DDR_VREF_CA_B Voltage (V)/ DDR_VREF_CA_
C Voltage (V)/ DDR_VREF_DQ_A Voltage (V)/ DDR_VREF_DQ_B Voltage (V)/ DDR_
VREF_DQ_C Voltage (V)/ NB Voltage (V)/ ICH Voltage (V)
These tems are used to adjust the voltage of CPU, Memory and chpset.
Spread Spectrum
When the manboard’s clock generator pulses, the extreme values (spkes) of the pulses
create EMI (Electromagnetc Interference). The Spread Spectrum functon reduces the
EMI generated by modulatng the pulses so that the spkes of the pulses are reduced to
flatter curves. If you do not have any EMI problem, leave the settng at Dsabled for opt-
mal system stablty and performance. But f you are plagued by EMI, set to Enabled for
EMI reducton. Remember to dsable Spread Spectrum f you are overclockng because
even a slght jtter can ntroduce a temporary boost n clock speed whch may just cause
your overclocked processor to lock up.
Important
If you do not have any EMI problem, leave the settng at [Dsabled] for optmal system
stablty and performance. But f you are plagued by EMI, select the value of Spread
Spectrum for EMI reducton.
The greater the Spread Spectrum value s, the greater the EMI s reduced, and the
system wll become less stable. For the most sutable Spread Spectrum value, please
consult your local EMI regulaton.
Remember to dsable Spread Spectrum f you are overclockng because even a slght
jtter can ntroduce a temporary boost n clock speed whch may just cause your over-
clocked processor to lock up.
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