This is interesting. I wonder how low.
For example, I have a fast internet connection, a few TB to spare, but only a low energy APU with PicoPSU computer that's running Linux 24/7. Would that work, or will the APU be a bottleneck?
Assuming the client works in Linux, what about a Synology NAS?
What about a high-speed router running OpenWRT or AsusWRT linux with USB attached storage?
If those would work, we'd really have an interesting low-power alternative to mining.