Dell PowerEdge T640 EMC PowerEdge T640 Installation and Service Manual - Page 55

System Profile Settings, Performance Per Watt Optimized DAPC

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System Profile Settings You can use the System Profile Settings screen to enable specific system performance settings such as power management. Viewing System Profile Settings To view the System Profile Settings screen, perform the following steps: Steps 1. Power on, or restart your system. 2. Press F2 immediately after you see the following message: F2 = System Setup NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then restart your system and try again. 3. On the System Setup Main Menu screen, click System BIOS. 4. On the System BIOS screen, click System Profile Settings. System Profile Settings details About this task The System Profile Settings screen details are explained as follows: Option System Profile Description Sets the system profile. If you set the System Profile option to a mode other than Custom, the BIOS automatically sets the rest of the options. You can only change the rest of the options if the mode is set to Custom.This option is set to Performance Per Watt Optimized (DAPC) by default. DAPC is Dell Active Power Controller. NOTE: All the parameters on the system profile setting screen are available only when the System Profile option is set to Custom. CPU Power Management Sets the CPU power management. This option is set to System DBPM (DAPC) by default. DBPM is DemandBased Power Management. Memory Frequency Sets the speed of the system memory. You can select Maximum Performance, Maximum Reliability, or a specific speed. This option is set to Maximum Performance by default. Turbo Boost Enables or disables the processor to operate in the turbo boost mode. This option is set to Enabled by default. C1E Enables or disables the processor to switch to a minimum performance state when it is idle. This option is set to Enabled by default. C States Enables or disables the processor to operate in all available power states. This option is set to Enabled by default. Write Data CRC Enables or disables the Write Data CRC. This option is set to Disabled by default. Memory Patrol Scrub Sets the memory patrol scrub frequency. This option is set to Standard by default. Memory Refresh Sets the memory refresh rate to either 1x or 2x. This option is set to 1x by default. Rate Uncore Frequency Enables you to select the Processor Uncore Frequency option.Dynamic mode enables the processor to optimize power resources across cores and uncores during runtime. The optimization of the uncore frequency to either save power or optimize performance is influenced by the setting of the Energy Efficiency Policy option. Energy Efficient Policy Enables you to select the Energy Efficient Policy option. The CPU uses the setting to manipulate the internal behavior of the processor and determines whether to target higher performance or better power savings. This option is set to Balanced Performance by default. Pre-operating system management applications 55

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System Profile Settings
You can use the
System Profile Settings
screen to enable specific system performance settings such as power management.
Viewing System Profile Settings
To view the
System Profile Settings
screen, perform the following steps:
Steps
1.
Power on, or restart your system.
2.
Press F2 immediately after you see the following message:
F2 = System Setup
NOTE:
If your operating system begins to load before you press F2, wait for the system to finish booting, and then
restart your system and try again.
3.
On the
System Setup Main Menu
screen, click
System BIOS
.
4.
On the
System BIOS
screen, click
System Profile Settings
.
System Profile Settings details
About this task
The
System Profile Settings
screen details are explained as follows:
Option
Description
System Profile
Sets the system profile. If you set the System Profile option to a mode other than
Custom
, the BIOS
automatically sets the rest of the options. You can only change the rest of the options if the mode is set to
Custom
.This option is set to
Performance Per Watt Optimized (DAPC)
by default. DAPC is Dell Active
Power Controller.
NOTE:
All the parameters on the system profile setting screen are available only when the System
Profile option is set to Custom.
CPU Power
Management
Sets the CPU power management. This option is set to
System DBPM (DAPC)
by default. DBPM is Demand-
Based Power Management.
Memory
Frequency
Sets the speed of the system memory. You can select
Maximum Performance
,
Maximum Reliability
, or a
specific speed. This option is set to
Maximum Performance
by default.
Turbo Boost
Enables or disables the processor to operate in the turbo boost mode. This option is set to
Enabled
by default.
C1E
Enables or disables the processor to switch to a minimum performance state when it is idle. This option is set to
Enabled
by default.
C States
Enables or disables the processor to operate in all available power states. This option is set to
Enabled
by default.
Write Data CRC
Enables or disables the Write Data CRC. This option is set to
Disabled
by default.
Memory Patrol
Scrub
Sets the memory patrol scrub frequency. This option is set to
Standard
by default.
Memory Refresh
Rate
Sets the memory refresh rate to either 1x or 2x. This option is set to
1x
by default.
Uncore Frequency
Enables you to select the
Processor Uncore Frequency
option.
Dynamic mode
enables the processor to
optimize power resources across cores and uncores during runtime. The optimization of the uncore frequency to
either save power or optimize performance is influenced by the setting of the
Energy Efficiency Policy
option.
Energy Efficient
Policy
Enables you to select the
Energy Efficient Policy
option.
The CPU uses the setting to manipulate the internal behavior of the processor and determines whether to target
higher performance or better power savings. This option is set to
Balanced Performance
by default.
Pre-operating system management applications
55