if this new chip is the Switch's chip it is a considerable amount more powerful than the Steam Deck, at least in docked mode
here's a small thought experiment I did in another thread
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that's a big jump.
the X1 has 256 cuda cores right?
let's assume it's the same clock speed as the Switch which is 768mhz docked.
at that clock speed this chip would have ~2.36TF peak performance.
the Switch in docked mode reached 0.39TF as a comparison.
2.36TF is a good chunk above the PS4, and a big jump from the Steam Deck
let's say they clock it higher in docked this time, let's say Nintendo uses the max clock that the X1 can support, which is 1267mhz
in that case the docked performance could get to 3.9TF, quite literally on the doorstep of the Series S
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tldr:
this chip, which has 1536 cuda cores, would reach 2.36TF if it will run at the og Switch's clock speeds in docked mode (768mhz)
it would reach 3.9TF if it runs at the same clock the Tegra X1 is rated for (1.267ghz)
the Steam Deck can reach 1.6TF max, but it can thermal throttle and power throttle to values below that.
let's go further and add all the 3 different Switch clock speed profiles to this new chip.
the Switch in Handheld mode can run at 307.2 MHz, 384 MHz, and 460 MHz
at those speeds the new chip would reach:
0.943TF at 307.2 Mhz
1.18TF at 384 Mhz
1.41TF at 460 Mhz
(the maths goes [Cuda Cores] * [clock speed] * 2 btw)
so if we assume this new Chip is indeed the Chip used inside the Switch 2, and we assume that clock speeds will not go up even by a single mhz,
we would have a Handheld that could reach 1.41TF in portable mode, basically trading blows with the Steam Deck,
and 2.36TF in docked mode, which is faster than the PS4 even ignoring architecture advancements.
add DLSS to the mix and you already have a really nice piece of hardware here.
if they actually clock it higher than these speeds then it could actually rival the Series S with 3.9TF if it uses the Tegra X1's max rated speed of 1.267ghz