I'm trying to reduce the SoC heat as much as possible, so I underclocked the GPU and I get a few mW saving with everything still working.
In config.txt :
Is there any problem setting values that low ? I'm not sure it really follows those settings but the consumption seems slightly lower than with all the values set to default (250Mhz I think)h264_freq_min=100
I'd also like to know if a very slight undervolt to the CPU (over_voltage=-1) is within the margins of factory calibration when the RPI's are manufactured, to stay at 100% reliable operation. It's for RPI 3B clocked at 1200Mhz. Thanks in advance!