Supermicro X11DSC+ User Manual page 83

Hyper-Threading [All] (Available when supported by the CPU)
Select Enabled to support Intel® Hyper-threading Technology to enhance CPU performance.
The options are Disable and Enable.
Cores Enabled
This feature allows the user to determine the number of CPU cores to be enabled. Enter
"0" to enable all cores. The default setting is 0, which enables all CPU cores in the system.
Execute Disable Bit (Available if supported by the OS & the CPU)
Select Enable 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 flooding illegal codes to overwhelm the processor or
damage the system during an attack. (Please refer to Intel's website for more information.)
The options are Disable and Enable.
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.
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Chapter 4: BIOS