Chapter 4: BIOS
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CPU P State Control
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
Disable and
Enable
.
Dynamic SST-PP
Use this feature to enable or disable Intel Speed Select Technology Performance Profile
(SST-PP). The options are
Disable
and Enable.
Intel SST-PP
Use this feature to select the base frequency conditions for SST-PP. The options are
Base
, Config 3, and Config 4.
Activate SST-BF
Use this feature to enable or disable Intel Speed Select Technology Base Frequency.
The options are
Disable
and Enable.
*If the feature above is set to Enable, the next feature will be available for con
-
figuration:
Configure SST-BF
Enable this feature for the BIOS to configure the SST-BF High Priority Cores so the
software does not configure it. The options are Disable and
Enable
.
EIST PSD Funtion
This feature allows you to choose between Hardware and Software to control the proces-
sor'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. The
options are
HW_ALL
and SW_ALL.
Turbo Mode
This feature enables dynamic control of the processor, allowing it to run above stock
frequency. The options are Disable and
Enable
.
