MSI X399 GAMING PRO CARBON AC Présentation Rapide page 56

fOpcache Control [Auto]
Enables/ disables Opcache.
fIOMMU Mode [Auto]
Enables/disables the IOMMU (I/O Memory Management Unit) for I/O Virtualization.
fSpread Spectrum [Auto]
This function reduces the EMI (Electromagnetic Interference) generated by
modulating clock generator pulses.
[Enabled]
[Disabled]
Important
If you do not have any EMI problem, leave the setting at [Disabled] for optimal system
y
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
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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
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slight jitter can introduce a temporary boost in clock speed which may just cause your
overclocked processor to lock up.
fAMD Cool' n' Quiet [Enabled]
The Cool' n' Quiet technology can effectively and dynamically lower CPU speed and
power consumption.
fRelaxed EDC throttling [Auto]
[Auto]
[Enabled]
[Disabled]
46
BIOS Setup
Enables the spread spectrum function to reduce the EMI
(Electromagnetic Interference) problem.
Enhances the overclocking ability of CPU Base clock.
AMD's recommendation
Reduce the amount of time the processor will throttle.
Part-specific EDC throttling protection enabled.