I use the PowerJive USB Power Meter(for older Pis with micro USB power inputs), or the SATECHI USB-C Power Meter (for the Pi 4 and newer)to measure power consumption with the Dramble and individual Raspberry Pis, in all cases with nothing plugged into USB (unless otherwise noted). I will be adding power consumption statistics to this page as time goes on.
There are a few different ways you can reduce power consumption on the Pi (any model):
- Disable HDMI
- Disable onboard LEDs
- Minimize accessories
See this post for more information and instructions how to do all of the above: ConserveRaspberry Pis power consumption.
Raspberry Pi 4 B
| Pi State | Power Consumption |
|---|---|
| Idle | 540 mA (2.7 W) |
ab -n 100 -c 10 (uncached) | 1010 mA (5.1 W) |
400% CPU load (stress --cpu 4) | 1280 mA (6.4 W) |
Raspberry Pi 3 B+
| Pi State | Power Consumption |
|---|---|
| Idle | 350 mA (1.9 W) |
ab -n 100 -c 10 (uncached) | 950 mA (5.0 W) |
400% CPU load (stress --cpu 4) | 980 mA (5.1 W) |
Raspberry Pi 3 B
| Pi State | Power Consumption |
|---|---|
| Idle | 260 mA (1.4 W) |
ab -n 100 -c 10 (uncached) | 480 mA (2.4 W) |
400% CPU load (stress --cpu 4) | 730 mA (3.7 W) |
Raspberry Pi 2 B
| Pi State | Power Consumption |
|---|---|
| Idle | 220 mA (1.1 W) |
ab -n 100 -c 10 (uncached) | 450 mA (~2.3 W) |
400% CPU load (stress --cpu 4) | 400 mA (~2.1 W) |
Raspberry Pi 2 B with external USB 3.0 SSD
| Pi State | Power Consumption |
|---|---|
| Powering on, 1x USB 64GB SSD | 900-1400 mA (~4.5 W) |
| Idle, 1x USB 64GB SSD | 960 mA (~4.8 W) |
ab -n 100 -c 10 (uncached), 1x USB 64GB SSD | 1100 mA (~5.5 W) |
| 400% CPU load, 1x USB 64GB SSD | 1250 mA (~6.25 W) |
Other Raspberry Pi models
For the below power tests, stock Rasbpian Lite was installed, and the measurement was taken after the Pi had been running idle for 1 minute, with nothing connected except onboard orUSB WiFi as noted.
| Pi Model | Pi State | Power Consumption |
|---|---|---|
| 4 B | HDMI off, LEDs off | TODO |
| 4 B | HDMI off, LEDs off, onboard WiFi | TODO |
| 3 B+ | HDMI off, LEDs off | 350 mA (1.7 W) |
| 3 B+ | HDMI off, LEDs off, onboard WiFi | 400 mA (2.0 W) |
| 3 B | HDMI off, LEDs off | 230 mA (1.2 W) |
| 3 B | HDMI off, LEDs off, onboard WiFi | 250 mA (1.2 W) |
| 2 B | HDMI off, LEDs off | 200 mA (1.0 W) |
| 2 B | HDMI off, LEDs off, USB WiFi | 240 mA (1.2 W) |
| Zero 2 W | HDMI off, LED off | 100 mA (0.6 W) |
| Zero 2 W | HDMI off, LEDs off, onboard WiFi | 120 mA (0.7 W) |
| Zero | HDMI off, LED off | 80 mA (0.4 W) |
| Zero | HDMI off, LED off, USB WiFi | 120 mA (0.7 W) |
| B+ | HDMI off, LEDs off | 180 mA (0.9 W) |
| B+ | HDMI off, LEDs off, USB WiFi | 220 mA (1.1 W) |
| A+ | HDMI off, LEDs off | 80 mA (0.4 W) |
| A+ | HDMI off, LEDs off, USB WiFi | 160 mA (0.8 W) |
Also, as a point of reference, when you power off a Raspberry Pi (any model), it typically uses 20-30 mA (0.1W) until you physically disconnect the power.
