HP KC.32101.DMP Datasheet download pdf (Page 70)

Thermal Management

70 Datasheet, Volume 1

5.5 Thermal and Power Specifications

The following notes apply to the tables in this section.

Note Definition

The TDPs given are not the maximum power the processor can generate. Analysis indicates that

real applications are unlikely to cause the processor to consume the theoretical maximum power

dissipation for sustained periods of time.

TDP workload may consist of a combination of a processor-core intensive and a graphics-core

intensive applications.

The thermal solution needs to ensure that the processor temperature does not exceed the

maximum junction temperature (T

j,max

) limit, as measured by the DTS and the critical

temperature bit.

The processor junction temperature is monitored by Digital Temperature Sensors (DTS). For DTS

accuracy, refer to Section 5.6.2.1.

Digital Thermal Sensor (DTS) based fan speed control is required to achieve optimal thermal

performance. Intel recommends full cooling capability well before the DTS reading reaches

j,max

. An example of this would be T

j,max

– 10 ºC.

The idle power specifications are not 100% tested. These power specifications are determined by

the characterization at higher temperatures and extrapolating the values for the junction

temperature indicated.

7At T

of T

j,max

8At T

of 50 ºC

9At T

of 35 ºC

10 Can be modified at runtime by MSR writes, with MMIO and with PECI commands

'Turbo Time Parameter' is a mathematical parameter (seconds) that controls the processor Turbo

algorithm using a moving average of energy usage. Do not set the Turbo Time Parameter to a

value less than 0.1 seconds. Refer to Section 5.3.3 for further information.

Shown limit is a time averaged power, based upon the Turbo Time Parameter. Absolute product

power may exceed the set limits for short durations or under virus or uncharacterized workloads.

Processor will be controlled to specified power limit as described in Section 5.2. If the power

value and/or ‘Turbo Time Parameter’ is changed during runtime, it may take a short period of

time (approximately 3 to 5 times the ‘Turbo Time Parameter’) for the algorithm to settle at the

new control limits.

14 This is a hardware default setting and not a behavioral characteristic of the part.

15 For controllable Turbo workloads, limit may be exceeded for up to 10 ms

16 Refer to Tab le 5 -2 for the definitions of ‘TDP-Nominal’, ‘TDP-Up’, ‘TDP-Down’

LPM power level is an opportunistic power and is not an ensured value as usages and

implementations may vary. LPM power level assumes 1 core active, processor core frequency at

MFM, Graphics Core running at non Turbo frequency, and running an application according to

Note 2.

Power limits may vary depending on if the product supports the 'TDP-up' and/or 'TDP-down'

modes. Default power limits can be found in the PKG_PWR_SKU MSR (614h)

19 Might be changed based on SKU

20 Unlimited max power limit requires the latest BIOS revision.

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