Dual-Core Intel® Xeon® Processor 5100 Series Thermal/Mechanical Design Guide 23
Thermal/Mechanical Reference Design
Since T
CONTROL
is based on a processor DTS temperature value, an equivalent T
CASE
temperature must be determined to plot the T
CASE
@ T
CONTROL
point on the Thermal
Profile graph. Location 1 on the Thermal Profile represents a T
CASE
value corresponding
to P
_PROFILE_MIN
. Location 2 on the Thermal Profile represents a T
CASE
value
corresponding to DTS = T
CONTROL
. If the DTS temperature is less than T
CONTROL
, then
the case temperature is permitted to exceed the Thermal Profile, but the DTS
temperature must remain at or below T
CONTROL
. The thermal solution for the processor
must be able to keep the processor’s T
CASE
at or below the T
CASE
values defined by the
Thermal Profile between the T
CASE_MAX
@P
_PROFILE_MIN
and T
CASE_MAX
points at the
corresponding power levels.
Refer to Section 2.3.1 for the implementation of the T
CONTROL
value in support of fan
speed control (FSC) design to achieve better acoustic performance.
2.2.7 Thermal Profile Concepts for the Dual-Core Intel Xeon
Processor 5100 Series
2.2.7.1 Dual Thermal Profile Concept for the Dual-Core Intel Xeon
Processor 5160
The Dual-Core Intel Xeon Processor 5160 are designed to go into various form factors,
including the volumetrically constrained 1U and custom blade form factors. Due to
certain limitations of such form factors (that is, airflow, thermal solution height), it is
very challenging to meet the thermal requirements of the processor. To mitigate these
form factor constraints, Intel has developed a dual Thermal Profile specification, shown
in Figure 2-8.
Figure 2-7. T
CONTROL
and Thermal Profile Interaction
T
CASE
MAX
T
CASE
P
_PROFILE_MIN
T
CASE
MAX@
P
_PROFILE_MIN
Power
TDP
Thermal Profile
②
①
T
CASE
@DTS=
T
CONTROL
T
CASE
MAX
T
CASE
P
_PROFILE_MIN
T
CASE
MAX@
P
_PROFILE_MIN
Power
TDP
Thermal Profile
②
①
T
CASE
@DTS=
T
CONTROL
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