>Their claims were actually a mix of comparisons against NAND and DRAM; I don't think they ever claimed it would be denser than NAND, just denser than DRAM.

You're right. I looked up the slide before commenting to look at the numbers and misread it. Actually, that reminds me that the first time I saw the slide years ago I hoped we were going to have Optane memory sticks and desktops with hundreds of gigabytes of main memory, even if with worse latency. I remember being so disappointed when Optane finally came out and reading the actual numbers. Yeah, the latency was okayish, but the throughput was barely better than NAND.

>Also, the Optane SSDs were never locked to Intel systems, just their caching software for Windows and the Optane DIMMs.

If anything, that just makes it worse. I was quite interested in Optane, and I can't remember which things were what and what they worked on. The product line was so confusing.