HP KC.32101.DMP Datasheet download pdf (Page 73)

Datasheet, Volume 1 73

Thermal Management

5.6 Thermal Management Features

Thermal management features for the entire processor complex (including the

processor core, the graphics core, and integrated memory controller hub) will be

referred to as processor package, or by simply the package.

Occasionally the package will operate in conditions that exceed its maximum allowable

operating temperature. This can be due to internal overheating or due to overheating in

the entire system. To protect processor package and the system from thermal failure,

several thermal management features exist to reduce package power consumption and

thereby temperature in order to remain within normal operating limits. Furthermore,

the processor supports several methods to reduce memory power.

5.6.1 Adaptive Thermal Monitor

The purpose of the Adaptive Thermal Monitor is to reduce processor core power

consumption and temperature until it operates at or below its maximum operating

temperature. Processor core power reduction is achieved by:

• Adjusting the operating frequency (using the core ratio multiplier) and input

voltage (using the SVID bus).

• Modulating (starting and stopping) the internal processor core clocks (duty cycle).

The Adaptive Thermal Monitor can be activated when any package temperature,

monitored by a digital thermal sensor (DTS), meets or exceeds its maximum junction

temperature specification (T

J,max

) and asserts PROCHOT#. The assertion of PROCHOT#

activates the thermal control circuit (TCC), and causes both the processor core and

graphics core to reduce frequency and voltage adaptively. The TCC will remain active as

long as any package temperature exceeds its specified limit. Therefore, the Adaptive

Thermal Monitor will continue to reduce the package frequency and voltage until the

TCC is de-activated.

Table 5-6. Idle Power Specifications

Segment Symbol

Idle Parameter Min Typ Max

Units Notes

Extreme Edition

(XE)

Idle power in the Package C6

state

--3.6W6, 9

Idle power in the Package

C7state

--3.5W6, 9

Quad Core SV

45 W

Idle power in the Package C6

state

--3.1W6, 9

Idle power in the Package

C7state

--3.0W6, 9

Dual Core and

Quad Core SV

35 W

Idle power in the Package C6

state

--3.0W6, 9

Idle power in the Package

C7state

--2.9W6, 9

Dual Core Ultra

Idle power in the Package C6

state

--2.3W6, 9

Idle power in the Package

C7state

--2.2W6, 9

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