Boundary Condition Definition; I5-2000 Desktop Processor Series (Quad Core 95W) - Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - THERMAL MECHANICAL SPECIFICATIONS AND DESIGN GUIDELINES 01-2011 Specifications

Sensor Based Thermal Specification Design Guidance
8.3.1

Boundary Condition Definition

Using the knowledge of the system boundary conditions (such as inlet air temperature,
acoustic requirements, cost, design for manufacturing, package and socket mechanical
specifications and chassis environmental test limits) the designer can make informed
thermal solution design decisions.
For the Intel
the thermal boundary conditions for an ATX tower system are as follows:
• T
EXTERNAL
• T
RISE
• T
AMBIENT
Based on the system boundary conditions, the designer can select a T
to use in thermal modelling. The assumption of a T
the required 
assumed T
Figure 8-4

i5-2000 desktop processor series (Quad Core 95W).

Note: If the assumed T
thermal solution performance may not be sufficient to meet the product requirements.
The results may be excessive noise from fans having to operate at a speed higher than
intended. In the worst case this can lead to performance loss with excessive activation
of the Thermal Control Circuit (TCC).
Figure 8-4. Example: Required 
Note: If an ambient of greater than 45.1 °C is necessary based on the boundary conditions a
thermal solution with a 
Thermal/Mechanical Specifications and Design Guidelines
®
Core™ i7-2000 and i5-2000 desktop processor series (Quad Core 95W)
= 35 °C. This is typical of a maximum system operating environment
= 5 °C. This is typical of a chassis compliant to CAG 1.1 or TAC 2.0
= 40 °C (T = T
AMBIENT
needed to meet TTV T
CA
can utilize a design with ahigher 
AMBIENT
shows a number of satisfactory solutions for the Intel
is inappropriate for the intended system environment, the
AMBIENT
for Various T
CA
lower than 0.29 °C/W will be required.
CA
+ T )
EXTERNAL RISE
AMBIENT
at TDP. A system that can deliver lower
CASEMAX
, which can have a lower cost.
CA
Conditions
AMBIENT
and 
AMBIENT
has a significant impact on
®
Core™ i7-2000 and
CA
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