In PCIe gen 3 it is already possible to saturate the PCI lanes with NAND. Even in gen 4 you get 6 GB/s. You gain some in latency but you really need to invest i

In PCIe gen 3 it is already possible to saturate the PCI lanes with NAND. Even in gen 4 you get 6 GB/s. You gain some in latency but you really need to invest in the software to eke out that latency gain. 3DXpoint really shines in persistent memory but that requires investing quite a bit to change software to make use of it and the problem is that of a single vendor and high prices. There are users for it but I havent seen anything to convince me its really viable.