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5.6.1.1
T
CONTROL
Factory configured T
Letter or may be extracted by issuing a Mailbox or an RDMSR instruction. See the
appropriate datasheet for more information.
Due to increased thermal headroom based on thermal characterization on the latest
processors, customers have the option to reduce T
factory configured values.
In some situations, use of reduced T
and improve acoustics. There are no plans to change Intel's specification or the factory
configured T
To implement this guidance, customers must re-write code to set T
reduced values provided in the table below. Implementation is optional. Alternately, the
factory configured T
configured and Guidance. Regardless of T
the processor type.
Table 5-5.
T
CONTROL
TDP
130W
95W
95W
80W
60W
130W
95W
95W
80W
60W
40W
Notes:
1.
Use factory configured T
Implementation of T
(based on modeling of the Intel Reference Design). Implementation of T
may increase risk of throttling (Thermal Control Circuit activation). Increased TCC
activation may or may not result in measurable performance loss.
Thermal Profile still applies. If PECI >= T
must meet the Thermal Profile.
5.6.2
PECI Averaging and Catastrophic Thermal Management
By averaging DTS over PECI, thermal solution failure can be detected and a soft
shutdown can be initiated to help prevent loss of data.
Thermal data is averaged over a rolling window of 256 mS by default (X=8):
AVG
38
Guidance
values are available in the appropriate Dear Customer
CONTROL
values on individual processors.
CONTROL
values can still be used, or some value between factory
CONTROL
Guidance
T
CONTROL
Guidance
See Note 1
Intel® Xeon® Processor 5500 Series
-10
Intel® Xeon® Processor 5500 Series with 2.93 GHz Max Core Frequency
-1
Intel® Xeon® Processor 5500 Series frequencies lower than 2.93 GHz
-1
Intel® Xeon® Processor 5500 Series 2.53 GHz or lower, except Embedded (NEBS)
-1
Intel® Xeon® Processor 5500 Series 2.26 GHz or lower, except Embedded (NEBS)
See Note 1
Intel Xeon processor 5600 series (6 core and 4 core)
-1
Intel Xeon processor 5600 series (6 core) 2.93 GHz or lower
-1
Intel Xeon processor 5600 series (4 core) 3.06 GHz or lower
-1
Intel Xeon processor 5600 series (4 core) 2.66 GHz or lower, except Embedded
-1
Intel Xeon processor 5600 series (6 core) 2.26 GHz or lower, except Embedded
-1
Intel Xeon processor 5600 series (4 core) 2.13 GHz or lower, except Embedded
values.
CONTROL
Guidance above maintains Intel standards of reliability
CONTROL
= AVG
* (1 – 1/2
N
N-1
CONTROL
Guidance can reduce average fan power
CONTROL
values used, BIOS needs to identify
CONTROL
Comment
Guidance, then the case temperature
CONTROL
X
) + Temperature * 1/2
Thermal Solutions
to values lower than the
to the
CONTROL
of -1
CONTROL
X
Thermal/Mechanical Design Guide
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