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Raspberry Pi A+ How Much Power Does It Need? #piday #raspberrypi @Raspberry_Pi

Raspberry Pi A+ How Much Power Does It Need?, from RasPi.TV:

…As before, when I did a similar thing for the B+, I used my trusty eMeter. But this time I used it inline with an ISO-TECH IPS 3303D bench power supply (at 5.2V) to corroborate the readings.

Methodology

I wanted to see how much current each Pi would consume under four circumstances….

  1. Idling in command line – low CPU load
  2. Starting LXDE desktop – heavy CPU load
  3. Watching Big Buck Bunny in HD – GPU load
  4. Filming Full HD video with Pi camera – GPU load + camera load

So this was done for each Pi in turn, A+, then B+, then A. I didn’t bother with the B as we had a separate B+/B comparison when B+ was launched. (I did the B rev 2 without filming the next day and updated the table.) All measurements were using a bench-supply set to a regulated 5.2V….

Read More.

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