That seems pretty unlikely. Do you mean it has a 256GB SSD with a small amount of Optane memory fronting it, integrated on an NVMe device?

256GB of Optane persistent memory would cost north of $2500.

My desktop has a 480GB Optane disk, it cost around $500 4 years ago. There was a prosumer lineup of almost affordable Optane disks - https://ark.intel.com/content/www/us/en/ark/products/123626/...

Yeah but that’s not the byte-addressable looks-exactly-like-DRAM stuff the article is going on about.

what do you mean? the disk only has optane, there's no NAND or anything behind it like some of the lower end Optane SSDs.

Optane is/was sold as pcie/nvme block devices. I use that for durability compared to TLC flash. It was also sold as DRAM format hanging off a memory controller and presented as (magically persistent) pages/bytes to the os/application. Theyre different price points.