Supermicro X10SDV-TLN4F User Manual download pdf (Page 71)

Chapter 4: AMI BIOS

4-7

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 ooding illegal codes

to overwhelm the processor or damage the system during an attack. The default is

Enable. (Refer to the Intel

and Microsoft

websites for more information.)

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 set to Enabled, the hardware prefetcher will prefetch streams of data and instruc-

tions from the main memory to the L2 cache to improve CPU performance. The

options are Disable and Enable.

Adjacent Cache Prefetch (Available when supported by the CPU)

The CPU prefetches the cache line for 64 bytes if this feature is set to Disabled.

The CPU prefetches both cache lines for 128 bytes as comprised if this feature is

set to Enable.

DCU Streamer Prefetcher (Available when supported by the CPU)

Select Enabled to enable the DCU (Data Cache Unit) Streamer Prefetcher which

will stream and prefetch data and send it to the Level 1 data cache to improve data

processing and system performance. The options are Disable and Enable.

DCU IP Prefetcher (Available when supported by the CPU)

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 Disable and Enable.

Direct Cache Access (DCA Support)

Select Enabled to use Intel's DCA (Direct Cache Access) Technology to improve

data transfer efciency. The options are Enable and Disable.

X2APIC

Select Enable to activate APIC (Advanced Programmable Interrupt Controller) sup-

port. The options are Enable and Disable.

AES-NI

Select Enable to use the Intel Advanced Encryption Standard (AES) New Instruc-

tions (NI) to ensure data security. The options are Enable and Disable.

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Supermicro X10SDV-TLN4F User Manual Page 71