Supermicro 2027R-E1R24L User Manual page 100

Execute-Disable Bit (Available if supported by the OS & the CPU)
Select Enabled 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 fl ooding illegal codes
to overwhelm the processor or damage the system during an attack. The default is
Enabled. (Refer to Intel and Microsoft Web sites for more information.)
®
Intel AES-NI
Select Enable to use the Intel Advanced Encryption Standard (AES) New Instruc-
tions (NI) to ensure data security. The options are Enabled and Disabled.
MLC Streamer Prefetcher (Available when supported by the CPU)
If set to Enabled, the MLC (mid-level cache) streamer prefetcher will prefetch
streams of data and instructions from the main memory to the L2 cache to improve
CPU performance. The options are Disabled and Enabled.
MLC Spatial Prefetch (Available when supported by the CPU)
If this feature is set to Disabled, The CPU prefetches the cache line for 64 bytes.
If this feature is set to Enabled the CPU fetches both cache lines for 128 bytes as
comprised. The options are Disabled and Enabled.
DCU Streamer Prefetcher (Available when supported by the CPU)
Select Enabled to support Data Cache Unit (DCU) prefetch of L1 data to speed
up data accessing and processing in the DCU to enhance CPU performance. The
options are Disabled and Enabled.
DCU IP Prefetcher
Select Enabled for DCU (Data Cache Unit) IP Prefetcher support, which will prefetch
IP addresses to improve network connectivity and system performance. The options
are Enabled and Disabled.
Intel® Virtualization Technology (Available when supported by the CPU)
Select Enabled to support Intel Virtualization Technology, which will allow one
platform to run multiple operating systems and applications in independent parti-
tions, creating multiple "virtual" systems in one physical computer. The options
are Enabled and Disabled.
Note: If there is any change to this setting, you will need to power off and
restart the system for the change to take effect. Please refer to Intel's
website for detailed information.)
7-7
Chapter 7: BIOS