Best case scenario is more like 4 TFlops (1.3 GHz GPU clock) with Nintendo loosening the TGP to 20W in docked mode. That'd put it at about 70% of a Series S in terms of performance (seeing how Ampere <-> RDNA2 tend to relate that much TFLOP-to-TFLOP on average. An RTX 2050 is about equal to an RX 6400 in performance, despite the latter having 70% of the TFLOPS estimate of the prior.)
Worst case scenario is probably something like 2.3 TFLOPs (750MHz) in docked mode, that being the same docked mode clock rate as the original Switch. That'd put it about 40% of a Series S, in terms of performance, in docked mode.
.7 TF corresponds to about 230 MHz. That is lower than the original Switch's clock rate in handheld mode and probably very, very inefficient. Nintendo and Nvidia would've been better off going with a much smaller chip if that is their mobile clock-rate target. (EDIT: I don't think Ampere can even go that low. It's minimum voltage would demand a frequency higher than that. Around 400 MHz, if I recall correctly.)
My guess is that the chip is going to be 3 TFLOPs (975MHz) if on 8 nm, when docked, and 3.4 TFLOPs (1100 MHz) if on 5nm when docked. That'd put it around 50% to 60% of the Series S in terms of expected performance, before any DLSS gains. Halve all of that for handheld mode.
If Nintendo were aggressive with the power-budget this time around (given they have better cooling), we could potentially see 1.3GHz (4 TFlops) in docked mode.
Just for context the lowest clock rate of any Ampere chip is 562 MHz in the RTX A2000. That's a 26 SM chip, which is going wide and low frequency for efficiency. I'd expect the handheld Switch 2 to beat that efficiency, but not by more than half the clock rate reduction. Probably something like 450MHz, given what we've seen with other Orin chips, is the base-line, with higher modes being options, like with the original Switch. That'd be a handheld-mode baseline of 1.38 TFlops.
Last edited by sc94597 - on 04 January 2025