Does anyone know it’s graphics card specs ? How big of a neural net can I run? Does it Raspi4 have a tensor flow backend ? At the power usage if Raspi4, how bi

Does anyone know it’s graphics card specs ? How big of a neural net can I run? Does it Raspi4 have a tensor flow backend ? At the power usage if Raspi4, how big of a solar panel and battery do I need to have a always sentient computer out in the wild that can recognize and count things ?