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SuperServer E100-9APP User's Manual
Chapter 5: BIOS
If the above is set to Enable, CPU P State will display:
CPU P State Control
P State Domain
This feature allows the user to indicate the P-State domain for each logical process in the
system. All processes indicate the same domain in the same package. The options are
ALL
and ONE.
P-State Coordination
This feature allows the user to change the P-State (Power-Performance State) coordination
type. P-State is also known as "SpeedStep" for Intel processors. Select HW_ALL to change
the P-State coordination type for hardware components only. Select SW_ALL to change
the P-State coordination type for all software installed in the system. Select SW_ANY to
change the P-State coordination type for a software program in the system. The options
are
HW_All,
SW_ALL, and SW_ANY.
Energy Efficient P-State
Select Enable to support power-saving mode for P-State. The options are Disable and
Enable.
Boot Performance Mode
This feature allows the user to select the performance state that the BIOS will set before
the operating system handoff. The options are
Max Performance
and Max Efficient.
Turbo Mode
Select Enable for processor cores to run faster than the frequency specified by the
manufacturer. The options are Disable and
Enable
.
CPU HWPM State Control
Enable CPU HWPM
Select Enable for better CPU energy performance. The options are
Disable
, HWPM NATIVE
MODE, and HWPM OOB MODE.
Enable CPU Autonomous Cstate
Use this feature to enable CPU Autonomous C State, which converts HALT instructions to
Mwait. The options are
Disable
and Enable.
CPU C State Control
CPU C State
Use this feature to enable the enhanced C State of the CPU. The options are Disable and
Enable
.
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 instructions from
the main memory to the L2 cache to improve CPU performance. The options are
Enable
and Disable.
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
Enable
and Disable.
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
Enable
and Disable.
Direct Cache Access (DCA)
Select Enabled to use Intel's DCA (Direct Cache Access) Technology to improve data transfer
efficiency. The options are Disable, Enable, and
Auto
.
Intel® Virtualization Technology (Available when supported by the CPU)
Select Enabled to support Intel
®
Virtualization Technology, which will allow one platform to
run multiple operating systems and applications in independent partitions, creating multiple
"virtual" systems in one physical computer. The options are
Enable
and Disable.
Note
: If a change is made to this setting, you will need to reboot the system for the
change to take effect. Refer to Intel’s website for detailed information.
Advanced Power Management Configuration
This section is used to configure the following CPU Power Management settings.
EIST (P-States)
EIST (Enhanced Intel SpeedStep Technology) allows the system to automatically adjust
processor voltage and core frequency to reduce power consumption and heat dissipation.
The options are Disable and
Enable.
