MSI 945P NEO5-F User Guide - Page 60

BIOS Setup, Memory Voltage, NB voltage, FSB Voltage, Spread Spectrum, Con DRAM Timing by SPD - motherboard manual

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BIOS Setup M emory Voltage Adjusting the DDR voltage can increase the DDR speed. Any changes made to this setting may cause a stability issue, so changing the DDR voltage for long-term purpose is NOT recommended. NB voltage This item is used to adjust the North Bridge Voltage. This setting offers users a tool to overclock the system. FSB Voltage This item is used to adjust the incremental percentage of FSB voltage. The item has eight options, the Min Value is 0% and the Max Value is 20%. This setting offers users a tool to overclock the system. Spread Spectrum W hen 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, select the desired range for EMI reduction. Remember to disable Spread Spectrum function 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. Important 1. 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, select the value of Spread Spectrum for EMI reduction. 2. The greater the Spread Spectrum value is, the greater the EMI is reduced, and the system will become less stable. For the most suitable Spread Spectrum value, please consult your local EMI regulation. 3. 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. Configure DRAM Timing by SPD Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. Setting to [Enabled] enables DRAM timings and thefollowing related items to be determined by BIOS based on the configurations on theSPD. Selecting [Disabled] allows users to configure the DRAM timings and the follow-ing related items manually. Setting options: [Enabled], [Disabled]. 3-23 Important

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3-23
BIOS Setup
Memory Voltage
Adjusting the DDR voltage can increase the DDR speed. Any changes made to this
setting may cause a stability issue, so
changing the DDR voltage for long-term
purpose is NOT recommended
.
NB voltage
This item is used to adjust the North Bridge Voltage. This setting offers users a tool to
overclock the system.
FSB Voltage
This item is used to adjust the incremental percentage of FSB voltage. The item has
eight options, the Min Value is 0% and the Max Value is 20%. This setting offers users
a tool to overclock the system.
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,
select the desired range for EMI reduction. Remember to disable Spread Spectrum
function if you are overclocking, because even a slight jitter can introduce a tempo-
rary boost in clock speed which may just cause your overclocked processor to lock
up.
Important
Configure DRAM Timing by SPD
Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect)
EEPROM on the DRAM module. Setting to [Enabled] enables DRAM timings and
thefollowing related items to be determined by BIOS based on the configurations on
theSPD. Selecting [Disabled] allows users to configure the DRAM timings and the
follow-ing related items manually. Setting options: [Enabled], [Disabled].
Important
1. 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, select the value of Spread Spectrum for EMI reduction.
2. The greater the Spread Spectrum value is, the greater the EMI is reduced,
and the system will become less stable. For the most suitable Spread
Spectrum value, please consult your local EMI regulation.
3. Remember to disable Spread Spectrum if you are overclocking be-
cause even a slight jitter can introduce a temporary boost in clock
speed which may just cause your overclocked processor to lock up.