Chapter 3, Important – MSI A88XM GAMING User Manual

Page 77

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Chapter 3

3-17

BIOS Setup

CPU NB Switching Frequency [Auto]

Sets the PWM working speed to stabilize CPU NB voltage and minimize ripple

range. Increasing the PWM working speed will cause higher temperature of

MOSFET. So please make sure a cooling solution is well-prepared for MOSFET

before you increase the value. If set to “Auto”, BIOS will configure this setting

automatically.

CPU Power Duty Control

Selects the method of VRM control for CPU phase.

[Thermal Balance] Control the VRM with thermal balance mode.

[Current Balance] Control the VRM with current balance mode.

XXX Voltage [Auto]

Sets these voltages. If set to "Auto", BIOS will set these voltages automatically or you

can set it manually.

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.

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.

OC Retry Count [1]

Resets counts for overclocking retrying. When overclocking has failed, setting this

item as [1, 2, 3] will allow system to reboot 1, 2, 3 times with the same overclocked

configuration. If overclocking has failed every time, the system will restore the defaults.

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