44 Using the System Setup Program and UEFI Boot Manager
Power Management Screen
Option Description
Power Management
(OS Control default)
Options are OS Control, Active Power Controller,
Custom, or Maximum Performance. For all but the
Custom setting, the BIOS pre-configures the power
settings on this screen as follows:
•
OS Control
sets the CPU power to
OS DBPM
, the fan
power to
Minimum Power
, and the memory power to
Maximum Performance
. In this setting, all processor
performance information is passed from the system
BIOS to the operating system for control. The operating
system sets the processor performance based on
processor utilization.
•
Active Power Controller
sets the CPU power to
System
DBPM
, the fan power to
Minimum Power
, and the
memory power to
Maximum Performance
. The BIOS
sets the processor performance based on
processor utilization.
•
Maximum Performance
sets all fields to
Maximum
Perfor manc e
.
If you select Custom, you can configure each
option independently.
CPU Power and
Perfor man ce
Management
Options are OS DBPM, System DBPM, Maximum
Performance, or Minimum Power.
Fan Powe r and
Perfor man ce
Management
Options are Maximum Performance or Minimum Power.
Memory Power and
Perfor man ce
Management
Options are Maximum Performance, a specified
frequency, or Minimum Power.
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