Pixel 2 and newer have a completely independent processor for photo processing https://en.wikipedia.org/wiki/Pixel_Visual_Core https://en.wikipedia.org/wiki/Pix

Pixel 2 and newer have a completely independent processor for photo processing https://en.wikipedia.org/wiki/Pixel_Visual_Core https://en.wikipedia.org/wiki/Pixel_Visual_Core It also includes :AI: The Pixel 4 has renamed it the "Pixel Neural Core" and has given it even more machine learning tasks and offloading such as Google Assistant and face unlock.