Chapter 6: BIOS
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SuperServer 5019S-MT User's Manual
C-State Auto Demotion
Use this feature to prevent unnecessary excursions into the C-states to improve latency. The
options are Disabled, C1, C3, and
C1 and C3
.
C-State Un-Demotion
This feature allows the user to enable or disable the un-demotion of C-State. The options are
Disabled, C1, C3, and
C1 and C3
Package C-State Demotion
Use this feature to enable or disable the Package C-State demotion. The options are
Disabled
and Enabled.
Package C-State Un-Demotion
Use this feature to enable or disable the Package C-State un-demotion. The options are
Disabled
and Enabled.
C-State Pre-Wake
This feature allows the user to enable or disable the C-State Pre-Wake. The options are
Disabled and
Enabled
.
Package C-State Limit
Use this feature to set the Package C-State limit. The options are C0/C1, C2, C3, C6, C7,
C7s, C8, and
Auto
.
CPU Thermal Configuration
CPU DTS
Select Enabled for the ACPI thermal management to use the DTS SMM mechanism to
obtain CPU temperature values. Select Disabled for EC to report the CPU temperature
values. The options are
Disabled
and Enabled.
ACPI 3.0 T-States
Select Enabled to support CPU throttling by the operating system to reduce power
consumption. The options are
Disabled
and Enabled.
Package Power Limit MSR Lock
Select Enabled to lock the package power limit for the model specific registers. The options
are
Disabled
and Enabled.
Power Limit 1 Override
Select Enabled to support average power limit (PL1) override. The default setting is
Disabled
.
Power Limit 2 Override
Select Enabled to support rapid power limit (PL2) override. The default setting is
Enabled
.
Power Limit 2
Use this item to configure the value for Power Limit 2. The value is in milli watts and the step
size is 125mW. Use the number keys on your keyboard to enter the value. Enter 0 to use the
manufacture default setting. If the value is 0, the BIOS will set PL2 as 1.25* TDP.
1-Core Ratio Limit Override
This increases (multiplies) 1 clock speed in the CPU core in relation to the bus speed when
one CPU core is active. Press "+" or "-" on your keyboard to change the value. Enter 0 to
use the manufacture default setting.
2-Core Ratio Limit Override
This increases (multiplies) 2 clock speeds in the CPU core in relation to the bus speed when
two CPU cores are active. Press "+" or "-" on your keyboard to change the value. Enter 0 to
use the manufacture default setting.
3-Core Ratio Limit Override
This increases (multiplies) 3 clock speeds in the CPU core in relation to the bus speed when
three CPU cores are active. Press "+" or "-" on your keyboard to change the value. Enter 0
to use the manufacture default setting.
4-Core Ratio Limit Override
This increases (multiplies) 4 clock speeds in the CPU core in relation to the bus speed when
three CPU cores are active. Press "+" or "-" on your keyboard to change the value. Enter 0
to use the manufacture default setting.
CPU C-States
Use this feature to enable the C-State of the CPU. The options are Disabled and
Enabled
.
Enhanced C-States
Use this feature to enable the enhanced C-State of the CPU. The options are Disabled and
Enabled
.