Hawk_Tuah The 9 Pro and Pro XL come equipped with a Tensor G4 and 16GB of RAM compared to the Tensor G3 and 12GB of RAM in the 8 Pro. They're (obviously) a lot faster than older Pixel devices. In terms of battery life, I'm an app minimalist and, so, I can easily get a few days out of a full charge. I'm by no means a hardware guru so I'm sure someone else could provide a more in depth and technical response.