The assumption made in using a resistive network as a matrix multiply is that D/A and A/D circuits are available at the speeds and resolutions intended. For run

The assumption made in using a resistive network as a matrix multiply is that D/A and A/D circuits are available at the speeds and resolutions intended. For running a network a few times per second, to utilize a trained network in an application, this is entirely reasonable. However, if you're going to be running hundreds of Mhz of samples at 8 bits or more of resolution, power goes up very quickly. Typical values are 100millwatts/channel for 8 bits of resolution at 100 Mhz in each direction.