SUPER MICRO Computer X6DHT-G - Manual (Page 67)

Chapter 4: BIOS
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No Execute Mode Memory Protection (*Available when supported
by the CPU and the OS.)
Set to Enabled to enable Execute Disable Bit and allow the processor to
classify areas in memory where an application code can execute and
where it cannot, and thus preventing a worm or a virus from inserting and
creating a flood of codes to overwhelm the processor or damage the
system during an attack.
(*Note: this feature is available when your OS and your CPU support the
function of Execute Disable Bit.) The options are Disabled and Enabled.
(Note: For more information regarding hardware/software support for this
function, please refer to Intel's and Microsoft's web sites.)
Thermal Management 2 (*Available when supported by the CPU.)
Set to Enabled to use Thermal Management 2 (TM2) which will lower CPU
voltage and frequency when the CPU temperature reaches a predefined
overheat threshold. Set to Disabled to use Thermal Manager 1 (TM1),
allowing CPU clocking to be regulated via CPU Internal Clock modulation
when the CPU temperature reaches the overheat threshold.
Adjacent Cache Line Prefetch (*Available when supported by the
CPU.)
The CPU fetches the cache line for 64 bytes if this option is set to Disabled.
The CPU fetches both cache lines for 128 bytes as comprised if Enabled.
The options are Disabled and Enabled.
Processor Power Management
This feature allows the user to determine the processor power management
mode. The options are Disabled and C States Only. If set to Disabled, C
States and GV1/GV3 are disabled. If set to C States only, the processor
power will be controlled through CPU power states in the APCI setting.