Intel i5-3340M AW8063801110300 Manual Do Utilizador
Códigos do produto
AW8063801110300
Thermal Management
72
Datasheet, Volume 1
5.3.2
Power Plane Control
The processor core and graphics core power plane controls allow for customization to
implement optimal Turbo within voltage regulator thermal limitations. It is possible to
use these power plane controls to protect the voltage regulator from overheating due
to extended high currents. Power limiting per plane cannot be ensured in all usages.
This function is similar to the package level long duration Turbo control. Graphics Turbo
frequencies can be efficiently limited by setting the Secondary Plane Turbo Power Limit
to an artificially low setting that may be designed in certain cases. Primary Plane Turbo
Power Limit lower settings are bound to the same limits as found in the
PACKAGE_MIN_POWER, MSR 0x614[30:16].
implement optimal Turbo within voltage regulator thermal limitations. It is possible to
use these power plane controls to protect the voltage regulator from overheating due
to extended high currents. Power limiting per plane cannot be ensured in all usages.
This function is similar to the package level long duration Turbo control. Graphics Turbo
frequencies can be efficiently limited by setting the Secondary Plane Turbo Power Limit
to an artificially low setting that may be designed in certain cases. Primary Plane Turbo
Power Limit lower settings are bound to the same limits as found in the
PACKAGE_MIN_POWER, MSR 0x614[30:16].
5.3.3
Turbo Time Parameter
'Turbo Time Parameter' is a mathematical parameter (units in seconds) that controls
the Intel Turbo Boost Technology algorithm using an exponentially weighted moving
average of energy usage. During a maximum power Turbo event of about 1.25 x TDP,
the processor could sustain POWER_LIMIT_2 for up to approximately 1.5 times the
Turbo Time Parameter. If the power value and/or ‘Turbo Time Parameter’ is changed
during runtime, it may take a period of time (possibly up to approximately 3 to 5 times
the ‘Turbo Time Parameter’, depending on the magnitude of the change and other
factors) for the algorithm to settle at the new control limits. There is an individual Turbo
Time parameter associated with Package Power Control and another associated with
each power plane.
the Intel Turbo Boost Technology algorithm using an exponentially weighted moving
average of energy usage. During a maximum power Turbo event of about 1.25 x TDP,
the processor could sustain POWER_LIMIT_2 for up to approximately 1.5 times the
Turbo Time Parameter. If the power value and/or ‘Turbo Time Parameter’ is changed
during runtime, it may take a period of time (possibly up to approximately 3 to 5 times
the ‘Turbo Time Parameter’, depending on the magnitude of the change and other
factors) for the algorithm to settle at the new control limits. There is an individual Turbo
Time parameter associated with Package Power Control and another associated with
each power plane.
5.4
Configurable Thermal Design Power (cTDP) and
Low Power Mode (LPM)
Configurable TDP (cTDP) and Low Power Mode (LPM) form a new design vector where
the processor’s behavior and package TDP are dynamically adjusted to a desired
system performance and power envelope. Configurable TDP and Low Power Mode
technologies are not battery life improvement technologies, but they offer new
opportunities to differentiate system design while running active workloads using
Intel’s premium processor products through scalability, configurability, and adaptability.
The scenarios or methods by which each technology is used are customizable but
typically involve changes to TDP with a resultant change in performance depending on
system’s usage. Either technology can be triggered by (but are not limited to) changes
in operating system power policies, or hardware events (such as docking a system),
flipping a switch, or pressing a button. cTDP and LPM are designed to be configured
dynamically and do not require an operating system reboot.
the processor’s behavior and package TDP are dynamically adjusted to a desired
system performance and power envelope. Configurable TDP and Low Power Mode
technologies are not battery life improvement technologies, but they offer new
opportunities to differentiate system design while running active workloads using
Intel’s premium processor products through scalability, configurability, and adaptability.
The scenarios or methods by which each technology is used are customizable but
typically involve changes to TDP with a resultant change in performance depending on
system’s usage. Either technology can be triggered by (but are not limited to) changes
in operating system power policies, or hardware events (such as docking a system),
flipping a switch, or pressing a button. cTDP and LPM are designed to be configured
dynamically and do not require an operating system reboot.
5.4.1
Configurable TDP (cTDP)
Note:
Configurable TDP is limited to a subset of Ultra and Extreme Edition parts but is subject
to change.
With cTDP, the processor is now capable of altering the TDP power with an alternate
ensured frequency. Configurable TDP allows operation in situations where extra cooling
is available or situations where a cooler and quieter mode of operation is desired.
Configurable TDP can be enabled using an Intel driver or through Hardware /
Embedded Controller (EC) firmware.
ensured frequency. Configurable TDP allows operation in situations where extra cooling
is available or situations where a cooler and quieter mode of operation is desired.
Configurable TDP can be enabled using an Intel driver or through Hardware /
Embedded Controller (EC) firmware.
Implementing cTDP using the DPTF driver is recommended as Intel does not provide
specific application or Embedded Controller (EC) source code.
specific application or Embedded Controller (EC) source code.