User`s manual

Chapter 4: BIOS
4-9
Fast String Operations (Available when supported by the CPU)
Set to Enabled to enable the fast string operations for special CPU instructions.
The options are Disabled and Enabled.
Compatible FPU Code (Available when supported by the CPU)
Set to Enabled to keep the content of the last instruction Operating Code (OPCode)
in the oating point (FP) state. The options are Disabled and Enabled.
Split Lock Operation
Set to Enabled to mask alignment check exceptions for split-lock transactions. The
options are Disabled and Enabled.
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 predened 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.
Set Maximum Ext. CPUID=3
When set to Enabled, the Maximum Extended CPUID will be set to 3. The options
are Disabled and Enabled.
Echo TPR
Set to Enabled to prevent xTPR messages from being sent to the system. The
options are Disabled and Enabled.
C1 Enhanced Mode (Available when supported by the CPU)
Set to Enabled to enable the Enhanced Halt State to lower CPU voltage/frequency
to prevent overheat. The options are Enabled and Disabled. (Note: please refer
to Intel’s website for detailed information.)