MSI H87M User Guide - Page 79

Spread Spectrum for EMI reduction., Internal VR Efficiency Management [Auto]

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▶ Internal VR OVP OCP Protection [Auto] Enables or disables the over-voltage protection and over-current protection for CPU internal VR (Voltage Regulator). [Auto] This setting will be configured automatically by BIOS. [Enabled] Sets the voltage limit on the CPU internal VR for over-voltage protection and over-current protection. [Disabled] Disables this function for overclocking. ▶ Internal VR Efficiency Management [Auto] Enables or disables the CPU internal VR efficiency management. [Auto] This setting will be configured automatically by BIOS. [Enabled] Enables the VR effciency management for power-saving control. [Disabled] Disables this function. ▶ DRAM Voltage [Auto] Sets the memory voltage. If set to "Auto", BIOS will set memory voltage automatically or you can set it manually. ▶ Current DRAM Voltage Shows current memory voltage. Read only. ▶ CPU Memory Changed Detect [Enabled] Enables or disables the system to issue a warning message during boot when the CPU or memory has been replaced. [Enabled] The system will issue a warning message during boot and than needs to load the default settings for new devices. [Disabled] Disables this function and keeps the current BIOS settings. ▶ Spread Spectrum This function reduces the EMI (Electromagnetic Interference) generated by modulating clock generator pulses. [Enabled] Enables the spread spectrum function to reduce the EMI (Electromagnetic Interference) problem. [Disabled] Enhances the overclocking ability of CPU Base clock. Important • 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. • 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. • 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. Chapter 3 3-21 BIOS Setup

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Chapter 3
3-21
BIOS Setup
Internal VR OVP OCP Protection [Auto]
Enables or disables the over-voltage protection and over-current protection for CPU
internal VR (Voltage Regulator).
[Auto]
This setting will be configured automatically by BIOS.
[Enabled]
Sets the voltage limit on the CPU internal VR for over-voltage protection
and over-current protection.
[Disabled]
Disables this function for overclocking.
Internal VR Efficiency Management [Auto]
Enables or disables the CPU internal VR efficiency management.
[Auto]
This setting will be configured automatically by BIOS.
[Enabled]
Enables the VR effciency management for power-saving control.
[Disabled]
Disables this function.
DRAM Voltage [Auto]
Sets the memory voltage. If set to "Auto",
BIOS will set memory voltage automatically
or you can set it manually.
Current DRAM Voltage
Shows current memory voltage. Read only.
CPU Memory Changed Detect [Enabled]
Enables or disables the system to issue a warning message during boot when the
CPU or memory has been replaced.
[Enabled]
The system will issue a warning message during boot and than needs
to load the default settings for new devices.
[Disabled]
Disables this function and keeps the current BIOS settings.
Spread Spectrum
This function reduces the EMI (Electromagnetic Interference) generated by modulating
clock generator pulses.
[Enabled]
Enables the spread spectrum function to reduce the EMI
(Electromagnetic Interference) problem.
[Disabled]
Enhances the overclocking ability of CPU Base clock.
Important
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.
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.
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.
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