Again Bertmod measures VRM temp, not ASIC.
The official firmware status page temp is also from VRM?
HW status:
ASIC slot #1: 54.0 ℃
ASIC slot #2: 53.0 ℃
ASIC slot #3: 55.0 ℃
ASIC slot #4: 43.0 ℃
Not on die, but on the PCB, underneath chip - temp sensor hence ~50 degrees celcius.
Really no desktop fans required, honestly.