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MSI AM-690E User Manual

Page 55

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BIOS Setup

Onboard Peripherals Configuration

Spread Spectrum

When the motherboard’s clock generator pulses, the extreme values (spikes)

of the pulses create 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.

Onboard LAN Boot ROM

The setting enables/disables the initialization of the onboard LAN Boot ROM

during bootup. Selecting [Disabled] will speed up the boot process.

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.

Important

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