Technology

That's pretty much my understanding. Most of the advancements happened in memory speeds are related to the physical proximity of the memory and more efficient transmission/decoding.

GDDR7 chips for example are packed as close as physically possible to the GPU die, and have insane read speeds of 28 Gbps/pin (and a 5090 has a 512-bit bus). Most of the limitation is the connection between GPU and RAM, so speeding up the chips internally 1000x won't have a noticeable impact without also improving the memory bus.

Note that this in theory speaks to performance of a non volatile memory. It does not speak to cost.

We already have a faster than NAND non volatile storage in phase change memory . It failed due to expense.

If this thing is significantly more expensive even than RAM, then it may fail even if it is everything it says it is. If it is at least as cheap as ram, it'll be huge since it is faster than RAM and non volatile.

Swap is indicated by cost, not by non volatile characteristics.

It‘s likely BS anyway. Maybe it’s just me but reading about another crazy breakthrough from China every single day during this trade war smells fishy. Because I‘ve seen the exact same propaganda strategy during the pandemic when relations between China and the rest of the world weren‘t exactly the best. A lot of those headlines coming from there are just claims about flashy topics with very little substance or second guessing. And the papers releasing the stories aren‘t exactly the most renowned either.