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Processor Min Ratio
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Microcode Revision
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L1 Cache RAM
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L2 Cache RAM
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L3 Cache RAM
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Processor 0 Version/Processor 1 Version
Hyper-Threading (ALL)
Select Enable to use Intel Hyper-Threading Technology to enhance CPU performance. The
options are Enable and Disable.
Core Disable Bitmap (Hex)
Use this feature to enable or disable CPU cores in the processor specified by the user. Enter
0 to enable all cores available in the processor. Enter bit0 to disable CPU Core 0. Enter bit1 to
disable CPU Core 1. Please note that the maximum of 24 CPU cores are currently available
in each CPU package. The default setting is 0.
Execute Disable Bit (Available if supported by the OS & the CPU)
Select Enable to keep mixed power-on frequency of each CPU socket. The options are
Enable and Disable.
Intel Virtualization Technology
Select Enable to use Intel Virtualization Technology which will allow the I/O device assignments
to be directly reported 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 settings are Enable and Disable.
PPIN Control
Select Unlock/Enable to use the Protected-Processor Inventory Number (PPIN) in the system.
The options are Unlock/Enable and Unlock/Disable.
Hardware Prefetcher (Available when supported by the CPU)
If this feature is set to Enable, the hardware prefetcher will prefetch streams of data and
instructions from the main memory to the Level 2 (L2) cache to improve CPU performance.
The options are Disable and Enable.
Adjacent Cache Prefetch (Available when supported by the CPU)
Select Enable for the CPU to prefetch both cache lines for 128 bytes as comprised. Select
Disable for the CPU to prefetch both cache lines for 64 bytes. The options are Disable and
Enable.
Note: Please power off and reboot the system for the changes you've made to take effect.
Please refer to Intel's website for detailed information.
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Chapter 6: UEFI BIOS
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