I’m using a 5V 2.5A Power Supply with the Raspberry Pi 3 + 314GB PiDrive
and have never had any power issues.
PiDrive is only drawing about 200mA … Voltage is 5.12V but haven’t had any issues using my 5V
Sure, i get the “Rainbow Screen” for a second and then disappears … which personally i don’t worry about.
If it was getting Stuck or Flashing on the Rainbow Screen … then i “would” worry
Also, although i’ve read the Pi3 by default already runs … max_usb_current=1
it might be worth manually putting it in the config.txt if you havent already
