Chapter 6: BIOS
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Intel Safer Mode Extensions
Select Enable for Safer Mode Extensions (SMX) support to enhance data security in the
processor for Intel Virtualization media support. The options are
Disable
and Enable.
Hardware Prefetcher (Available when supported by the CPU)
If 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)
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 reboot the system for changes on this setting to take effect. Please refer to
Intel’s website for detailed information.
DCU (Data Cache Unit) Streamer Prefetcher (Available when supported by the CPU)
If set to Enable, the DCU Streamer Prefetcher will prefetch data streams from the cache
memory to the DCU to speed up data accessing and processing for CPU performance
enhancement. The options are
Enable
and Disable.
DCU IP Prefetcher
If 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.
DCU Mode
Use this item to set the data-prefecting mode for the DCU (Data Cache Unit). The options
are
32KB 8Way Without ECC
and 16KB 4Way With ECC.
Direct Cache Access (DCA)
Select Enable to use Intel DCA (Direct Cache Access) Technology to ehance data transferring
and accessing. The options are Disable and
Enable
.
Extended APIC (Advanced Programmable Interrupt Controller)
Based on Intel's Hyper-Threading architecture, each logical processor (thread) is assigned
256 APIC IDs (APIDs) in 8-bit bandwidth. When this item 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
.
AES-NI
Select Enable to use the Intel Advanced Encryption Standard (AES) New Instructions (NI) to
ensure data security. The options are
Enable
and Disable.
