For sure: "Jetson TX1 draws as little as 1 watt of power or lower while idle, around 8-10 watts under typical CUDA load, and up to 15 watts TDP when the module is fully utilized, for example during gameplay and the most demanding vision routines."[1]

Anecdotally, the RPi2 has been measured[2] around 4-6 watts under load and the Edison was measured[3] around 1 watt.

[1] http://devblogs.nvidia.com/parallelforall/nvidia-jetson-tx1-...

[2] https://github.com/geerlingguy/raspberry-pi-dramble/wiki/Pow...

[3] https://www.openice.info/2015/07/24/three-days-with-intel-ed...