SuperServer 5019A-12TN4 User's Manual
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Enhanced Halt State (C1E)
This feature is not available if the EIST and CPU C State features are disabled. Select Enable
to enable Enhanced Halt State support, which will significantly 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.
L2 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 L2 cache to improve CPU performance. The options are
Enable
and Disable.
ACPI 3.0 T-States
Select Enable to support ACPI (Advanced Configuration and Power Interface) 3.0 T-States to
determine how the processor will report to the operating system during CPU-Throttling states.
The options are
Disable
and Enable.
*If the feature above is enabled, T-State Throttle is available for configuration:
T-State Throttle
Use this feature to select the On-Die throttling. The options are
default
, 12.5%, 25.0%, 37.5%,
50.0%, 62.25%, 75.0%, and 87.5%
Max CPUID Value Limit
Use this feature to set the maximum CPU ID value. Enable this feature to boot the legacy
operating systems that cannot support processors with extended CPUID functions. The
options are Enable and
Disable
(for the Windows OS).
Execute Disable Bit (Available if supported by the OS & the CPU)
Set to Enable for Execute Disable Bit support, 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 flooding illegal codes to overwhelm the processor or
damaging the system during a virus attack. The options are Disable and
Enable
. (Refer to
Intel and Microsoft websites for more information.)