Chapter 4: BIOS
4-13
Active Processor Cores
This feature determines how many CPU cores will be activated for each
CPU. When all is selected, all cores in the CPU will be activated. (Please
refer to Intel's website for more information.) The options are
All
and
1, 2, and 3.
Intel® Virtualization Technology
Select Enable to use Intel Virtualization Technology so that I/O device
assignments will be reported directly to the VMM (Virtual Memory
Management) through the DMAR ACPI Tables. This feature offers fully-
protected I/O resource-sharing across the Intel platforms, providing the
user with greater reliability, security and availability in networking and
data-sharing. The options are Disabled and
Enabled
.
Hardware Prefetcher (Available when supported by the CPU)
If set to Enabled, the hardware prefetcher will prefetch streams of data
and instructions from the main memory to the L2 cache to improve CPU
performance. The options are Disabled and
Enabled
.
Adjacent Cache Line Prefetch (Available when supported by the
CPU)
The CPU prefetches the cache line for 64 bytes if this feature is set to
Disabled. The CPU prefetches both cache lines for 128 bytes as comprised
if this feature is set to
Enabled
.
CPU AES
Select Enabled to enable Intel CPU Advanced Encryption Standard (AES)
Instructions for CPU to enhance data integrity. The options are
Enabled
and Disabled.
Boot Performance Mode
This feature allows the user to select the performance state that the
BIOS will set before the operating system handoff. The options are Power
Saving,
Max Non-Turbo Performance,
and Turbo Performance.
HardWare P-States (HWP)
Use this feature to enable or disable hardware P-States support. The
options are
Disabled
and Enabled.
Intel® SpeedStep™
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 and
Enabled
.
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