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3-9
BIOS Setup MS-9A78B1
▶ Intel Virtualization Technology
Virtualization enhanced by Intel Virtualization Technology will allow a platform
to run multiple operating systems and applications in independent partitions.
With virtualization, one computer system can function as multiple “Virtual”
systems.
▶ EIST
EIST (Enhanced Intel SpeedStep Technology) allows the system to dynamically
adjust processor voltage and core frequency, which can result in decreased
average power consumption and decreased average heat production.
When disabled, the processor will return the actual maximum CPUID input
value of the processor when queried.
▶ PCI/PCIE Device Configuration
▶ PCI Latency Timer
This item controls how long each PCI device can hold the bus before another
takes over. When set to higher values, every PCI device can conduct
transactions for a longer time and thus improve the effective PCI bandwidth.
For better PCI performance, you should set the item to higher values.
▶ OS Selection
Allows you to select the OS version.
[Windows 8] For Windows 8.X
[Windows 7] For Windows 7
▶ XHCI Mode
This setting disables/enables the USB XHCI controller. The eXtensible Host
Controller Interface (XHCI) is a computer interface specification that defines a
register-level description of a Host Controller for Universal Serial bus (USB),
which is capable of interfacing to USB 1.0, 2.0, and 3.0 compatible devices.
The specification is also referred to as the USB 3.0 Host Controller specifica -
tion.
▶ USB 20(EHCI) Support
These settings disable/ enable the USB EHCI controller. The Enhanced Host
Controller Interface (EHCI) specification describes the register-level interface
for a Host Controller for the USB 2.0.