Ran the same “test” again in powersave mode. lasted about 3h50m, so pretty dramatic. Here’s the temps under about the same conditions (same load, same blanket).
iwlwifi_1-virtual-0
Adapter: Virtual device
temp1: +39.0°C
acpitz-virtual-0
Adapter: Virtual device
temp1: +58.8°C (crit = +210.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +56.0°C (high = +100.0°C, crit = +100.0°C)
Core 0: +52.0°C (high = +100.0°C, crit = +100.0°C)
Core 1: +55.0°C (high = +100.0°C, crit = +100.0°C)
Core 2: +50.0°C (high = +100.0°C, crit = +100.0°C)
Core 3: +54.0°C (high = +100.0°C, crit = +100.0°C)