Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - THERMAL MECHANICAL S AND DESIGN GUIDELINES 01-2011, Технические характеристики

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Thermal/Mechanical Specifications and Design Guidelines 77
Sensor Based Thermal Specification Design Guidance
In the system under test and Power/Thermal Utility Software set to dissipate the TDP
workload confirm the following item:
• Verify if there is TCC activity by instrumenting the PROCHOT# signal from the
processor. TCC activation in functional application testing is unlikely with a
compliant thermal solution. Some very high power applications might activate TCC
for short intervals this is normal.
• Verify fan speed response is within expectations - actual RPM ( 
CA
) is consistent
with DTS temperature and T
AMBIENT
.
• Verify RPM versus PWM command (or voltage) output from the FSC device is within
expectations.
• Perform sensitivity analysis to asses impact on processor thermal solution
performance and acoustics for the following:
— Other fans in the system.
— Other thermal loads in the system.
In the same system under test, run real applications that are representative of the
expected end user usage model and verify the following:
• Verify fan speed response versus expectations as done using Power/Thermal Utility
SW.
• Validate system boundary condition assumptions: Trise, venting locations, other
thermal loads and adjust models / design as required.
8.6 Thermal Solution Characterization
Table 8-3 is early engineering data on the RCBF7-1156 (DHA-A) thermal solution as a
reference for the development of thermal solutions and the fan speed control
algorithm.
Table 8-3. Thermal Solution Performance above T
CONTROL
(Sheet 1 of 2)
T
AMBIENT
1

CA
at
DTS = T
CONTROL
2
RPM for 
CA
at
DTS = T
CONTROL
5

CA
at
DTS = -1 3
RPM for 
CA
at
DTS = -1 5
45.1 0.290 N/A 0.290 N/A
44.0 0.310 N/A 0.301 N/A
43.0 0.328 N/A 0.312 N/A
42.0 0.346 2950 0.322 N/A
41.0 0.364 2600 0.333 N/A
40.0 0.383 2300 0.343 3150
39.0 0.401 2100 0.354 2750
38.0 0.419 1900 0.364 2600
37.0 0.437 1750 0.375 2400
36.0 0.455 1650 0.385 2250
35.0 0.473 1500 0.396 2150
34.0 0.491 1400 0.406 2050
33.0 0.510 1350 0.417 1900
32.0 0.528 1200 0.427 1850
31.0 0.546 1150 0.438 1750
30.0 0.564 1050 0.448 1650
29.0 0.582 1000 0.459 1600