Intel 807 AV8062701079702 Data Sheet

When operating in turbo mode, the processor monitors its own power and adjusts the

turbo frequencies to maintain the average power within limits over a thermally

significant time period. The processor calculates the package power that consists of

the processor core power and graphics core power. In the event that a workload

causes the power to exceed program power limits, the processor will protect itself

using the Adaptive Thermal Monitor.

Illustration of Intel Turbo Boost Technology 2.0 power control is shown in the

following sections and figures. Multiple controls operate simultaneously allowing for

customization for multiple system thermal and power limitations. These controls allow

for turbo optimizations within system constraints and are accessible using MSR, MMIO,

or PECI interfaces.

The package power control settings of PL1, PL2, and PL3 Tau allow the designer to

configure Intel Turbo Boost Technology 2.0 to match the platform power delivery and

package thermal solution limitations.
•

Power Limit 1 (PL1): A threshold for average power that will not exceed;

recommend to set equal to TDP power. PL1 should not be set higher than thermal

solution cooling limits.

•

Power Limit 2 (PL2): A threshold that if exceeded, the PL2 rapid power limiting

algorithms will attempt to limit the spike above PL2.

•

Power Limit 3 (PL3): A threshold that if exceeded, the PL3 rapid power limiting

algorithms will attempt to limit the duty cycle of spikes above PL3 by reactively

limiting frequency. This is an optional setting

•

Turbo Time Parameter (Tau): An averaging constant used for PL1 exponential

weighted moving average (EWMA) power calculation.

1. Implementation of Intel Turbo Boost Technology 2.0 only requires configuring PL1,

PL1 Tau, and PL2.

2. PL3 is disabled by default.

5th Generation Intel

®

 Core

™

 Processor Family, Intel

®

 Core

™

 M Processor Family, Mobile Intel

®

 Pentium

®

 Processor Family, and

Mobile Intel

®

 Celeron

®

 Processor Family

March 2015

Datasheet – Volume 1 of 2

Order No.: 330834-004v1

61