[jiggawatts]

GBps, not Gbps! They were getting 12.6 gigabytes per second, which would be 100 gigabits per second almost exactly.

However, even their 6-DIMM test produces only 300 Gbps, which is insufficient to saturate a modern 400 GbE network adapter for either reads or writes.

This would be most relevant on a "single master" system storing some sort of simple data where consistency requirements means that the "writer" cannot be distributed. In a situation like this, the NIC and the storage bandwidth are the ultimate limits.

In general, Intel SSDs and Intel Optane have poor but consistent bandwidth, and consistently low latency. Coupled with the high price and small capacity, they have their niche, but they're not a clear winner in any category.

As a reference point for how crazy high bandwidths are these days, NVIDIA sells a turnkey solution with 200 GB/sec network bandwidth (1.6 Tbps!): https://www.nvidia.com/en-au/data-center/dgx-a100/

[lmilcin]

Where this is useful is when the application needs to process much more data than it then needs to transmit over the network.

For a database system like mongodb this could be perfect depending on workload.