I do not find an answer to this: when I feed the Rasp3 via microUSB and do from Putty “sudo vcgencmd get_throttled” the result is 0x0, that is, correct.
If instead of feeding by microUSB I do it from the GPIO pins 2 and 4 the result is 0x50005.
In both cases I use the same power source.
Some explanation?