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Figure 12.
Package Power Control
Turbo Time Parameter
Turbo Time Parameter is a mathematical parameter (units in seconds) that controls
the Intel Turbo Boost Technology 2.0 algorithm using moving average of energy
usage. During a maximum power turbo event of about 1.25 x TDP, the processor
could sustain PL2 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
approximately 3 to 5 times the Turbo Time Parameter for the algorithm to settle at the
new control limits. The time varies depending on the magnitude of the change and
other factors. There is an individual Turbo Time Parameter associated with Package
Power Control.
Configurable TDP (cTDP) and Low-Power Mode
Configurable TDP (cTDP) and Low-Power Mode (LPM) form a 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 offer opportunities to differentiate system design while running active
workloads on select processor SKUs through scalability, configuration and adaptability.
The scenarios or methods by which each technology is used are customizable but
typically involve changes to PL1 and associated frequencies for the scenario with a
resultant change in performance depending on system's usage. Either technology can
be triggered by (but are not limited to) changes in OS 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.
Note: 
Configurable TDP and Low-Power Mode technologies are not battery life improvement
technologies.
5.3.2  
5.4  
Processor—Thermal Management
5th Generation Intel
®
 Core
 Processor Family, Intel
®
 Core
 M Processor Family, Mobile Intel
®
 Pentium
®
 Processor Family, and
Mobile Intel
®
 Celeron
®
 Processor Family
Datasheet – Volume 1 of 2
March 2015
62
Order No.: 330834-004v1