Intel E8190 EU80570PJ0676MN User Manual
Product codes
EU80570PJ0676MN
Processor Thermal/Mechanical Information
20
Thermal and Mechanical Design Guidelines
The thermal profiles for the Intel Core™2 Duo processor E8000 series with 6 MB
cache, Intel Core™2 Duo processor E7000 series with 3 MB cache, and Intel Pentium
dual-core processor E6000 and E5000 series with 2 MB cache, and Intel Celeron
processor E3x00 series with 1 MB cache are defined such that there is a single thermal
solution for all of the 775_VR_CONFIG_06 processors.
cache, Intel Core™2 Duo processor E7000 series with 3 MB cache, and Intel Pentium
dual-core processor E6000 and E5000 series with 2 MB cache, and Intel Celeron
processor E3x00 series with 1 MB cache are defined such that there is a single thermal
solution for all of the 775_VR_CONFIG_06 processors.
To determine compliance to the thermal profile, a measurement of the actual
processor power dissipation is required. The measured power is plotted on the
Thermal Profile to determine the maximum case temperature. Using the example in
Figure 2-3 for a processor dissipating 50 W the maximum case temperature is 58° C.
See the datasheet for the thermal profile.
processor power dissipation is required. The measured power is plotted on the
Thermal Profile to determine the maximum case temperature. Using the example in
Figure 2-3 for a processor dissipating 50 W the maximum case temperature is 58° C.
See the datasheet for the thermal profile.
Figure 2-3. Example Thermal Profile
2.2.4
T
CONTROL
T
CONTROL
defines the maximum operating temperature for the digital thermal sensor
when the thermal solution fan speed is being controlled by the digital thermal sensor.
The T
The T
CONTROL
parameter defines a very specific processor operating region where fan
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.
acoustic noise of the processor cooling solution, while maintaining compliance to the
processor thermal specification.
Note: The T
CONTROL
value for the processor is relative to the Thermal Control Circuit (TCC)
activation set point which will be seen as 0 using the digital thermal sensor. As a
result the T
result the T
CONTROL
value will always be a negative number. See Chapter 4 for the
discussion the thermal management logic and features and Chapter 7 on Intel Quiet
System Technology (Intel QST).
System Technology (Intel QST).
The value of T
CONTROL
is driven by a number of factors. One of the most significant of
these is the processor idle power. As a result a processor with a high (closer to 0)
T
T
CONTROL
will dissipate more power than a part with lower value (farther from 0, such
as larger negative number) of T
CONTROL
when running the same application.
40
50
60
70
0
10
20
30
40
50
60
70
Power (W)
C
ase T
em
p
er
at
u
re (
°C
)
Thermal Profile
TDP