We already had this, it's called Intel Optane Persistent Memory and Intel killed it off last year: https://www.intel.com/content/www/us/en/products/docs/memory-storage/optane-persistent-memory/overview.html

The memory speed was slightly slower than DDR4 but the benefits didn't seem to outweigh the downsides. I think it probably kicked a lot of ass for specific use cases (eg. in-memory database that needs persistence), but the market was too small. Plus, SSDs are getting so ridiculously fast that it would put pressure on a product like this too.

Of course, this is still a new and emerging technology and it’s too early to say when we might see it in our devices, or how much it will cost.

Looks really cool, buy yeah my guess is i will cost to much to be viable for most things.

Can’t wait for my ram to last 1000 years just for the hinge on my laptop screen to last 2 (guess what just broke on my laptop after 2 years)

Perfect for when civilization collapses and we have to do some wasteland 2 shenannigans to get the lost knowledge of the past back by hoarding laptops.

Sounds like a niche use-case for pizza delivery drivers stumbling into cryo chambers