Peplink / Pepwave : best throughput per Watt (energy efficiency)

I have a Peplink at home which is on solar / battery backup, and I have a Pepwave in my RV (also solar powered) so I’m concerned with energy efficiency. I’m curious what the best models are.

My experience:

  1. Peplink Balance One uses about 12 Watts in normal operation, and can route 600mbps, for a performance of about 50mbps/watt.
  2. Pepwave Max BR1 Min (HW2) uses about 2 watts in normal operation, and can route about 100mbps, also giving a performance of about 50mbps/watt.

Are there other models which do well on this metric of throughput / watt?