Not a direct answer, but it's not just GPUs: on ARM "System on a Chip", you can get all sorts of components: audio, hardware codecs, networking, radio, and low-

Not a direct answer, but it's not just GPUs: on ARM "System on a Chip", you can get all sorts of components: audio, hardware codecs, networking, radio, and low-power companion cores (littlebig). So, your vision of general-computation-in-silicon has occurred, just static, not dynamic.