Chapter 4: BIOS
65
Turbo
Select Enable for processor cores to run faster than the frequency specied by the
manufacturer. The options are Disable and Enable.
TM1
Select Enable to activate TM1 support for system thermal monitoring. TM1 allows the CPU to
regulate its power consumption based upon the modulation of the CPU Internal clock when
the CPU temperature reaches a pre-dened overheating threshold. The options are Disable
and Enable.
TM2 Mode
Use this feature to select the throttling mode for TM2. The options are LFM Throttling and
Adaptive Throttling.
Dynamic Self Refresh
Select Enable to support Dynamic Self-Refreshing for the onboard memory controller. The
options are Disable and Enable.
CPU C State
Select Eanbled to enhance the Cx state of the CPU. Reboot the system for this feature to
take effect. The options are Disable and Enable.
*If the feature above is enabled, the following four items are available for conguration:
Package C State limit
Use this item to set the limit on the C-State package register. The options are No Pkg C-State,
C1, and C3.
Max Core C-State
Use this feature to specify which idle power saving state to enter. The options are C1 and C6.
Enhanced Halt State (C1E)
Select Enable to enable Enhanced Halt State support, which will signicantly reduce the
CPU's power consumption by minimizing the CPU's clock cycles and voltage use during a
Halt State. The options are Disable and Enable.
Monitor/Mwait
Select Enable to enable the Monitor/Mwait instructions. The Monitor instructions monitors
a region of memory for writes, and MWait instructions instruct the CPU to stop until the
monitored region begins to write. The options are Disable and Enable.
L1 Prefetcher (Available when supported by the CPU)
If enabled, the hardware prefetcher will prefetch streams of data and instructions from the main
memory to the L1 cache to improve CPU performance. The options are Enable and Disable.
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