XVME-6500
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 35 -
http://www.acromag.com
- 35 -
www.acromag.com
The temperature of the Intel® Lynx Point PCH is monitored by two thermal
sensors located on the PCH. The system will be shut down by the PCH when
its thermal limit is reached.
3.14.1 Thermal Monitoring
The BIOS setup utility displays the processor and board temperatures.
For
further information on how to check these temperatures, refer to
The APTIO
Haswell Core BIOS Manual For Acromag Products.
3.14.2 Thermal Throttling
3.14.2.1 CPU Throttling (Hardware Controlled)
The processor must not exceed the 100°C maximum junction temperature
(Tj).
When the integrated thermal monitor on the processor determines that the
maximum processor temperature has been reached, the CPU clock speed will
be throttled back in 100MHz increments to keep Tj from exceeding the
maximum junction temperature of 100°C.
If throttling is not enough to keep
the processor’s
Tj below the catastrophic
temperature limit of 105°C, the voltage supply to the processor will be turned
off within 500ms to prevent permanent silicon damage.
3.14.2.2 Thermal Management (OSPM Controlled)
In addition to the hardware throttling described above, software controlled
passive trip points may be configured using the system BIOS setup.
For information on how to configure these trip points, refer to
The APTIO
Haswell Core BIOS Manual For Acromag Products.
3.14.3 Memory Throttling
The memory bandwidth can be throttled back automatically if a thermal
sensor is on the DIMM. The NCT6776D will alert the memory controller via
PECI when the system memory exceeds its normal operating temperature.
For further information on configuring the memory bandwidth throttling
based on temperature readings from the DIMM’s thermal sensor
, refer to
The
APTIO Haswell Core BIOS Manual For Acromag Products.
3.14.4 Thermal Management Hardware
The XVME-6500 is available in air-cooled and extended air-cooled models
only. A larger double-slot heatsink is also available as an accessory. Please
consult the factory for more information.
Air-cooled assemblies must be installed into an air-cooled VME chassis with
proper airflow across the board. At least 300LFM of airflow is required to
ensure proper operation across entire specified temperature range.
