At the minimum it is useful because it is connected to CPU/memory by something more meaningful than USB as is the case with Raspberry Pi. Also for many interes

At the minimum it is useful because it is connected to CPU/memory by something more meaningful than USB as is the case with Raspberry Pi. Also for many interesting workloads (essentially anything that involves scatter-gather DMA from some other peripheral, eg. routing, file/storage server) you don't need that much powerful CPU to saturate gigabit ethernet.