A neuron is measured in micrometers, a memristor in nanometers (and the paper suggests even single-atom devices may be possible).

A neuron can fire at most a couple hundred times per second; a memristor has "subnanosecond switching speed", i.e. it operates in the usual GHz operating frequency range of modern computers.

And you can integrate them at the circuit level, so they can draw on the superbiological capabilities of existing computers at native speed.

* routing is a BITCH

* cooling is a BITCH

* noise is a slightly nicer BITCH

* we are very early in building real stuff with this

But yeah, it's cool, I hope it works out (otherwise I chose a deadend/false start for my PhD :-)