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X9DBU-3F/X9DBU-iF Motherboard User's Manual
DCU IP Prefetcher
Select Enabled for DCU (Data Cache Unit) IP Prefetcher support, which will prefetch
IP addresses to improve network connectivity and system performance. The options
are Enabled and Disabled.
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Intel
Virtualization Technology (Available when supported by the CPU)
Select Enabled to support Intel Virtualization Technology, which will allow one
platform to run multiple operating systems and applications in independent parti-
tions, creating multiple "virtual" systems in one physical computer. The options
are Enabled and Disabled.
Note: If there is any change to this setting, you will need to power off and
restart the system for the change to take effect. Please refer to Intel's
website for detailed information.)
CPU Power Management Confi guration
This submenu allows the user to confi gure the following CPU Power Management
settings.
Power Technology
Select Energy Effi ciency to support power-saving mode. Select Custom to custom-
ize system power settings. Select Disabled to disable power-saving settings. The
options are Disabled, Energy Effi cient, and Custom. If the option is set to Custom,
the following items will display:
EIST (Available when Power Technology is set to Custom)
EIST (Enhanced Intel SpeedStep Technology) allows the system to automatically
adjust processor voltage and core frequency to reduce power consumption and
heat dissipation. The options are Disabled (GV3 Disabled), and Enabled (GV3
Enabled). (Note: GV3 is Intel Speedstep support used on older platforms. Please
refer to Intel's website for detailed information.)
C1E Support (Available when Power Technology is set to Custom)
Select Enabled to enable Enhanced C1 Power State to boost system perfor-
mance. The options are Enabled and Disabled.
CPU C3 Report (Available when Power Technology is set to Custom)
Select Enabled to allow the BIOS to report the CPU C3 State (ACPI C2) to the
operating system. During the CPU C3 State, the CPU clock generator is turned
off. The options are Enabled and Disabled.
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