Very low latency, extreme durability, super high IOPS. It's SLC without the problems of SLC. The problem is it was a bit early, the interfaces never were fast enough (x4 3.0), and software that could have benefitted from massive amounts of it greatly, came out too late for it.

The actual problem is Intel was in such a bad position, they needed to shed weight, and Optane was not quick money.

In a DIMM slot though?