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  1. Monitor CPU die temperature in software.
    Temperature should not exceed 100ºC

  2. Measure enclosure temperature using a thermo-coupler or IR thermometer.
    Temperature should not exceed ambient+40ºC

  3. Measure power used by Bedrock.
    If measuring AC “at the wall” assume power consumed by Bedrock is 90% of the measured value
    Bedrock temperature above ambient is proportional to power

Notes:

  • To verify that Bedrock is assembled properly and does not have thermal conduction failures, check these guidelines

    • DeltaT die to enclosure should not exceed 20ºC

    • DeltaT between two sides of Bedrock should not exceed 15ºC

  • It is advised to limit CPU power in BIOS to the minimum power that meets performance goals, in order to reduce temperatures

  • All secondary devices (RAM, SSD, NICs, power FETs) are conduction cooled and are not expected to overheat

How do I check the CPU clocks?

To see the clocks of the CPU you can use the following command: lscpu -e=mhz

 To probe continuously you can use the command: watch -n 0.5 lscpu -e=mhz
This command will probe the CPU clocks every 0.5 seconds; you can change the probing time as you wish.