What is its latency compared to RAM, 10X ? Most latency comparisons mentioned in other comments compare RAM to pcie based optane memory, not the DRAM optane memory.

Edit: Article[1] here says the latency was 40µs with 13M IOPS, if you consider RAM latency to be 100ns[2], then it looks like 40X

[1] - https://blogs.technet.microsoft.com/filecab/2018/10/30/windo... [2] - https://gist.github.com/jboner/2841832