MSI 990FXA GAMING User Manual page 55

▶ HT Link Speed
This item allows you to set the Hyper-Transport Link speed. Setting to [Auto], the
system will detect the HT link speed automatically.
▶ Adjusted HT Link Frequency
It shows the adjusted HT Link frequency. Read-only.
▶ HT Link Control
Press <Enter> to enter the sub-menu.
▶ HT Incoming/ Outgoing Link Width
These items allow you to set the Hyper-Transport Link width. Setting to [Auto], the
system will detect the HT link width automatically.
▶ Setup Software P-state limit
Enables or disables P-state limit which is a ceiling on the amount of performance
and power that a processor may utilize. Enabling this function will also decrease the
processor temperature. If set to "Auto", BIOS will set it automatically.
▶ Adjust PCI-E Frequency (MHz)
Sets the PCI Express frequency.
▶ XXX Voltage [Auto] (optional)
Sets these voltages. If set to "Auto", BIOS will set these voltages automatically or you
can set it manually.
▶ Spread Spectrum [Disabled]
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 Specifications
Press <Enter> to enter the sub-menu. This sub-menu displays the information of
installed CPU. You can also access this information menu at any time by pressing
[F4]. Read only.
▶ CPU Technology Support
Press <Enter> to enter the sub-menu. The sub-menu shows what the key features
does the installed CPU support. Read only.