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SuperWorkstation 7049A-T User's Manual
Speedstep (Pstates)
Intel SpeedStep Technology allows the system to automatically adjust processor voltage and
core frequency to reduce power consumption and heat dissipation. The options are Disabled
and Enabled.
EIST PSD Funtion
This feature allows the user to choose between Hardware and Software to control the
processor's frequency and performance (P-state). In HW_ALL mode, the processor hardware
is responsible for coordinating the P-state, and the OS is responsible for keeping the P-state
request up to date on all logical processors. In SW_ALL mode, the OS Power Manager
is responsible for coordinating the P-state, and must initiate the transition on all Logical
Processors. In SW_ANY mode, the OS Power Manager is responsible for coordinating the
P-state and may initiate the transition on any Logical Processors.
Options available: HW_ALL/SW_ALL/SW_ANY. Default setting is HW_ALL.
Turbo Mode
This feature will enable dynamic control of the processor, allowing it to run above stock
frequency.
Hardware PM State Control
Hardware P-States
This setting allows the user to select between OS and hardware-controlled P-states. Selecting
Native Mode allows the OS to choose a P-state. Selecting Out of Band Mode allows the
hardware to autonomously choose a P-state without OS guidance. Selecting Native Mode
with No Legacy Support functions as Native Mode with no support for older hardware.
CPU C State Control
Autonomous Core C-State
Enabling this setting allows the hardware to autonomously choose to enter a C-state based
on power consumption and clock speed.
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
Disable and Enable.
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.
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