I'm skeptical. At a small scale, you could put together a cluster, but other than for the fun of putting it together, I don't see the point. I'd rather have a o

I'm skeptical. At a small scale, you could put together a cluster, but other than for the fun of putting it together, I don't see the point. I'd rather have a older Xeon with a high core count and use VMs or processes because it's more reliable and easier to manage. Or rent a cluster in the cloud for an hour. For large scale, dealing with heterogeneous hardware with questionable life remaining strapped to batteries that might start fires connected over USB or Wifi isn't ideal. Not to mention installing cluster software on all of them. At scale, you'd really want to strip the CPUs and mount lots of them on a single board, but that's not cheap to do. You're also dealing with 3+ year old technology that's been replaced by something more power-efficient.