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Chapter 4: AMI BIOS
4-7
Execute-Disable Bit Capability (Available when supported by the OS and
the CPU)
Set to Enabled to enable the Execute Disable Bit which will allow the processor
to designate areas in the system memory where an application code can execute
and where it cannot, thus preventing a worm or a virus from fl ooding illegal codes
to overwhelm the processor or damage the system during an attack. The default is
Enabled . (Refer to Intel and Microsoft Web Sites for more information.)
Intel AES-NI (Available when supported by the OS and the CPU)
If this feature is set to Enabled, Intel AES-NI will add new encryption features to help
accelerate AES Software application, providing code authorization and signature
verifi cation to improve system performance. The default is Disabled . (Refer to Intel
and Microsoft websites for more information.)
Simultaneous Multi-Threading (Available when supported by the CPU)
Set to Enabled to use the Simultaneous Multi-Threading Technology, which will
result in increased CPU performance. The options are Disabled and Enabled.
Active Processor Cores
Set to Enabled to use a processor's Second Core and beyond. (Please refer to
Intel's web site for more information.) The options are All, 1, 2, 3, 4 and 5.
Intel® EIST Technology
EIST (Enhanced Intel SpeedStep Technology) allows the system to automatically
adjust processor voltage and core frequency in an effort to reduce power consump-
tion and heat dissipation. Please refer to Intel’s web site for detailed information.
The options are Disable (Disable GV3) and Enable (Enable GV3) .
Intel® TurboMode Technology
Select Enabled to use the Turbo Mode to boost system performance. The options
are Enabled and Disabled.
C1E Support
Select Enabled to use the feature of Enhanced Halt State. C1E signifi cantly reduces
the CPU's power consumption by reducing the CPU's clock cycle and voltage during
a "Halt State." The options are Disabled and Enabled .
Intel® C-STATE Tech
If this item is set to Enabled, C-State is set by the system automatically to either
C2, C3 or C4 state. The options are Disabled and Enabled .