Do you know how much processing power is required to run it in real-time?
I don't know about the power needed to simulate the neurons, but my guess is that most of the resources are spent not on the calculations, but on interprocess communication. Running 302 processes on a Raspberry Pi and keeping hundreds of UDP sockets open probably takes a lot of its resources.
The technical solution is neither innovative nor fast. The benefits are in its distributed nature (every neuron could be simulated on a different computer) and in simplicity of implementation. At least while 100% faithfullness to the underlying mathematical model is no...
The connectome for the 302 neurons of the nematode C. elegans was put in charge of a Lego robot. Without any additional programming, the simulated brain started using the robot parts just like the original worm's organs.
"When you think about it, the brain is really nothing more than a collection of electrical signals."