AMD FW13 fan behaviour and ramp-up times

I must have forgotten to put up the results. Now updated.

The fan behaviour from a “fan curve” perspective is very similar (across the board I should say). The difference is with PPD set to ‘power-saver’, for all-core load the temps seem to be lower, settling around 70-72C with lower peak fan RPM. This is likely due to profile policy on CPU frequency. With PPD “disabled” the average CPU frequency would settle at around 3.3GHz in the above experiments, whereas with “power-saver” it would settle around 2.2GHz which would explain the difference in Tctl.

This does seem to be the case. I did not look too much into it and only added the link to the post for completion, rather than any criticism. There’s a lot of useful links in other threads that discuss the EC configuration and thermals, though most seem to be Intel related.

I did get the following readout from ectool thermalget:

sensor  warn  high  halt   fan_off fan_max   name
  0      343   353    393    313     343     local_f75303@4d
  1      343   353    393    319     327     cpu_f75303@4d
  2      343   353    393    401     401     ddr_f75303@4d
  3      381   388    400    376     378     cpu@4c
(all temps in degrees Kelvin)

[for cpu@4c: 376K ~ 103C; 378K ~ 105C]

Which is in line with the EC config and what you are saying.

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