There have been a number of trends in the SSD arena this year, 64-layer 3D NAND, QLC and NAND controllers based on NVMe are on the rise. Samsung, Marvell and Silicon motion already have some excellent controllers, you can add to that list Realtek with the new RTS5762 and RTS5763DL controllers, these reach 3.5 GB/sec.
So when is fast, fast enough? Well, the industry does not pay attention to that and as such we see performance increases each and every year. NVMe based on protocol 1.3 seems to become the new norm for this year, and such controllers indeed reach 3.5 GB/sec (if you pair it with the right amount and type of NAND flash memory of course).
