People keep insisting that a PS5 handheld will be rendering games differently than the base PS5 does, but that's just not possible.
PSSR is a temporal tech that needs motion vectors implemented and developer intervention. There's no world where Sony creates a weaker target spec for a handheld and all previous PS5 games just use PSSR at a lower base resolution.
That's not how PSSR works and I sure hope all this sheer ignorance around PSSR would go away, because it's always the same couple of suspects spreading it.
If a PS5 handheld ever comes out, it'll be running PS5 runtimes on PS5 hardware. There's just no way around it.
Otherwise it's a new hardware target that doesn't run PS5 runtimes and needs developers to open up the source code compile the game again for that new hardware. In which case it's not a console that runs PS5 games, it runs games for the new console.
The good news is AMD and TSMC are actually not that far off from being able to produce a mobile SoC capable of running PS5 games natively.
TSMC's N2 is probably good for producing a very small SoC with the 8core Zen2 running at 3.2GHz + 40CUs at 2.23GHz RDNA2, all running at 20-25W. LPDDR6 coming up in 2025 is also going to do 14.4MT/s which is a match to OG PS5's 14MT/s GDDR6.
In H2 2026 a PS5 SoC shrunk down to N2 should already do everything a PS5 does and at a low power, within the size and weight of a Steam Deck or ROG Ally.
There's no need to make up shit about PSSR if the release date is 2 years from now.
This thing will be a drm always online proprietary memory hell scape after how the vita ended up.
Even though I wish Sony would still support physical media at that point, a PS5 handheld will probably be digital only.