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SuperServer E100-9APP User's Manual
Chapter 5: BIOS
Workload Configuration
This feature allows for optimization of workload. Balanced is recommended. The options
are
Balanced
and I/O Sensitive.
Program PowerCTL_MSR
PKG C-state Lat. Neg.
Use this feature to indicate whether latency should be negotiated with PCH for packaging
C-States. The options are
Enable
and Disable.
SAPM Control
This feature indicates whether the PCU should control the System Agent PM using its
power-performance tuning algorithm. The options are
Enable
and Disable.
Energy Efficient Turbo
Use this feature to enable energy efficient turbo mode. The options are
Enable
and
Disable.
DRAM RAPL Configuration
Override BW_LIMIT_TF
Use this feature to set the value for the custom tuning of BW_LIMIT_TF. The default
value is
1
.
DRAM RAPL Extended Range
Use this feature to set the DRAM Running Average Power Limit (RAPL) Extended Range.
The options are Disable and
Enable
.
Chipset Configuration
Caution:
Setting the wrong values in the following features may cause the system to
malfunction.
North Bridge
This feature allows the user to configure the following North Bridge settings.
IIO Configuration
EV DFX (Device Function On-Hide) Features
When this feature is set to Enable, the EV_DFX Lock Bits that are located on a proces-
sor will always remain clear during electric tuning. The options are
Disable
and Enable.
Package C State Limit
This feature allows the user to set the limit on the C State package register. The options
are C0/C1 State, C2 State, C6 (Non Retention) State
,
C6 (Retention) State,
and No Limit.
CPU C3 Report
Select Enabled to allow the BIOS to report the CPU C3 State (ACPI C2) to the operating
system. During the CPU C3 State, the CPU clock generator is turned off. The options are
Enable and
Disable.
CPU C6 Report
Select Enabled to allow the BIOS to report the CPU C6 State (ACPI C3) to the operating
system. During the CPU C6 State, the power to all cache is turned off. The options are
Enable
and Disable.
Enhanced Halt State (C1E)
Select Enabled to use Enhanced Halt-State technology, which will significantly reduce the
CPU's power consumption by reducing the CPU's clock cycle and voltage during a Halt-
state. The options are Disable and
Enable
.
CPU T State Control
ACPI (Advanced Configuration Power Interface) T-States
Select Enable to support CPU throttling by the operating system to reduce power
consumption. The options are Enable and
Disable
.
CPU Advanced PM Tuning
Energy Perf BIAS
Energy Performance Tuning
When enabled, this item selects whether the BIOS or Operating System can turn on the
energy performance bias tuning. The options are
Enable
and Disable.
If the above is set to Disable, Energy Performance BIAS Setting will display:
Energy Performance BIAS Setting
This feature allows balancing Power Efficiency versus Performance. This will override
whatever setting is in the Operating System. The options are Performance,
Balanced
Performance
, Balanced Power, and Power.
Power/Performance Switch
This feature allows dynamic switching between Power and Performance power efficiency.
The options are
Enable
and Disable.
