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Intel Virtualization Technology (Available when supported by the CPU)
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 Disable and Enable.
Note: If a change is made to this setting, you will need to reboot the system for the
change to take effect. Refer to Intel's website for detailed information.
PPIN Control
Select Unlock/Enable to use the Protected-Processor Inventory Number (PPIN) in the system.
The options are Unlock/Disable and Unlock/Enable.
Hardware Prefetcher (Available when supported by the CPU)
If this item is set to Enable, 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 Enable and Disable.
Adjacent Cache Prefetch (Available when supported by the CPU)
The CPU prefetches the cache line for 64 bytes if this feature is set to Disable. The CPU
prefetches both cache lines for 128 bytes as comprised if this feature is set to Enable. The
options are Enable and Disable.
DCU Streamer Prefetcher (Available when supported by the CPU)
Select Enabled to enable Intel CPU Advanced Encryption Standard (AES) Instructions for
CPU to enhance data integrity. The options are Enable and Disable.
DCU IP Prefetcher (Available when supported by the CPU)
If this feature is set to Enable, the DCU (Data Cache Unit) IP prefetcher will prefetch IP
addresses in advance to improve network connectivity and system performance. The options
are Enable and Disable.
LLC Prefetch
Select Enable to support the LLC prefetch on all threads. The options are Disable and Enable.
Extended APIC
Select Enable to use the extended APIC (Advanced Programmable Interrupt Control) support
to enhance power management. The options are Disable and Enable.
AES-NI
Select Enable to use the Intel® Advanced Encryption Standard (AES) New Instructions (NI)
to ensure data security. The options are Disable and Enable.
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Chapter 6: BIOS
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