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temperature. Using the example in Figure 3 for a processor dissipating 110W the
maximum case temperature is 52.2°C. See the datasheet for the thermal profile.
Figure 3. Example Thermal Profile
2.2.3
T
CONTROL
T
CONTROL
when the thermal solution fan speed is being controlled by the digital thermal sensor.
The T
CONTROL
speed can be reduced. This allows the system integrator a method to reduce the
acoustic noise of the processor cooling solution, while maintaining compliance to the
processor thermal specification.
Note: The T
CONTROL
activation set point which will be seen as 0 via the digital thermometer. As a result the
T
CONTROL
the thermal management logic and features and Chapter 6 on Intel
Technology (Intel
The value of T
of these is the processor idle power. As a result a processor with a high (closer to 0)
T
CONTROL
more negative number) of T
The value of T
T
CONTROL
some parts is offset by a higher value of T
behave similarly in the acoustic performance.
18
defines the maximum operating temperature for the digital thermal sensor
parameter defines a very specific processor operating region where fan
value for the processor is relative to the Thermal Control Circuit (TCC)
value will always be a negative number. See Chapter 4 for the discussion
®
QST).
is driven by a number of factors. One of the most significant
CONTROL
will dissipate more power than a part with lower value (farther from 0, e.g.
CONTROL
is calculated such that regardless of the individual processor's
CONTROL
value the thermal solution should perform similarly. The higher power of
LGA775 Socket Heatsink Loading
when running the same application.
in such a way that they should
CONTROL
Thermal and Mechanical Design Guidelines
®
Quiet System
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