That is exactly what I made circa 2008. I used the izhekevich model for spiking. It was certainly faster on the GPU (2000x), but, yeah, getting the network to converge on anything was terrible. Debugging it was fun/awful though.

1:"Hey, do you see the first squiggle with the two fuzzes after."

2:"Next to Beaker's eyebrows?"

The low power work seems to have been aiming to be a rough filter, rather than a full system. Still fun to use.