So we know it is a custom SoC and has been in development for 2 years and 500 man hours. It is possible that the system might run a Volta BASED SoC and would be a brilliant strategy for Nintendo and Nvidia. Nvidia is planning on launching the chip in 2017, introducing it as an exclusive for the Switch would definitely be awesome. I hope this is the case because it would give about 1Tflop of 32fp precision or more and the Volta is designed for mobile vs. Parker which is designed for deep thinking/automotive use.
Discussion started at here by Darzin