There's an excellent teardown on YouTube of some Chinese dude who got a Switch 2 motherboard. It looks like a mix of Samsung's 10 nm and the tighter pitch of the improved 8 nm node, surprisingly enough, maybe to optimize its power-performance curve at the lowest end.
The die design is a bit strange since a couple of SMs on the GPU are separated from the others. The design tape-out was in 2021, indicating it might be true that it was originally planned for an earlier release.
Like DF, they also simulate Switch 2 performance with the RTX 2050 downclocked as a proxy. The docked performance is aligned to the GTX 1050 Ti in docked mode and the GTX 750 Ti in handheld mode in the Synthetic tests Steel Nomad Light. It's far from the Xbox Series S, and the closest mobile equivalents, graphics-wise, are Apple's A18 Pro and the M1 in docked mode, and the Steam Deck is a bit better in handheld mode.
