Biggest reason to get 64GB of RAM if you intend to do this - the Unified Memory is shared between the CPU and GPU. More pixels in total that the machine has to

Biggest reason to get 64GB of RAM if you intend to do this - the Unified Memory is shared between the CPU and GPU. More pixels in total that the machine has to render, the more RAM will be needed for the GPUs. Don't skimp on RAM or buy into the hype that ARM halves the amount of required RAM - it's total BS.