Monitoring; Thermal Sensors; Adapter Card Heatsink - Nvidia ConnectX-6 Dx User Manual

Monitoring

Thermal Sensors

The adapter card incorporates the ConnectX IC, which operates in the range of temperatures
between 0°C and 105°C.
Three thermal threshold definitions impact the overall system operation state:
• Warning – 105°C: On managed systems only: When the device crosses the 105°C threshold, a
Warning Threshold message is issued by the management SW, indicating to system
administration that the card has crossed the warning threshold. Note that this temperature
threshold does not require nor lead to any action by hardware (such as adapter card
shutdown).
• Critical – 115°C: When the device crosses this temperature, the firmware automatically shuts
down the device.
• Emergency – 130°C: If the firmware fails to shut down the device upon crossing the critical
threshold, the device automatically shuts down upon crossing the emergency (130°C)
threshold.
The card's thermal sensors can be read through the system's SMBus. The user can read these
thermal sensors and adapt the system airflow following the readouts and the needs of the above-
mentioned IC thermal requirements.

Adapter Card Heatsink

A heatsink is attached to the ConnectX-6 Dx IC to dissipate the heat. It is connected by four spring-
loaded push pins that insert into four mounting holes.
ConnectX®-6 Dx IC has a thermal shutdown safety mechanism that automatically shuts down the
ConnectX®-6 Dx card in case of a high-temperature event, improper thermal coupling, or heatsink
removal.
For the required airflow (LFM) per OPN, please refer to
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the Specifications chapter.
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