Supermicro SuperServer 1029GP-TR User Manual page 69

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 Disable and Enable.
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 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 Enable and Disable.
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 Enable and
Disable.
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.
DCU Streamer Prefetcher (Available when supported by the CPU)
If this item is set to Enable, the DCU (Data Cache Unit) streamer prefetcher will prefetch data
streams from the cache memory to the DCU (Data Cache Unit) to speed up data accessing
and processing for CPU performance enhancement. The options are Enable and Disable.
DCU IP Prefetcher
If this item is set to Enable, the IP prefetcher in the DCU (Data Cache Unit) will prefetch IP
addresses to improve network connectivity and system performance. The options are Enable
and Disable.
LLC Prefetch
If this feature is set to Enable, LLC (hardware cache) prefetching on all threads will be
supported. The options are Disable and Enable.
Extended APIC (Extended Advanced Programmable Interrupt Controller)
Based on the Intel Hyper-Threading technology, each logical processor (thread) is assigned
256 APIC IDs (APIDs) in 8-bit bandwidth. When this feature is set to Enable, the APIC ID
will be expanded from 8 bits to 16 bits to provide 512 APIDs to each thread to enhance CPU
performance. The options are Disable and Enable.
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Chapter 6: BIOS