These were all some of the reasons I was 100% sold on 4nm before the motherboard leak happened.But they don't want.
120GB/s is too much bandwidth for low clocks ampere. Since ampere only need 25 GB/s per Tflop, that mean a 4 Tflops Switch 2 is possible on LPDDR5X. below that, or much below that, is cheap use LPDDR5 or even LPDDR4X.
So, do you really think they found a way to have a Switch 2 at 4 Tflops (D)/ 2 Tflops (P) on 8nm?
The high number of SM and the high bandwidth of LPDDR5X point to high clocks. But 8nm don't. So, the wrong is Nintendo to use these or the people that think they tried to put these on 8nm?
If its 8nm 4 teraflops out of the question imo.
Maybe there are benefits to excess memory bandwidth we dont know about (DLSS execution speed, RT who knows).
Or Maybe Z0mb1ie is right that its 5nm.
But right now, my bet is on 8nm with a bit better power efficiency than Orin for unkown reasons.