Western Digital Blue SN550 NVMe 1 TB SSD Benchmarked
The Blue SN550 is at its weakest when reading and writing very small block sizes of 4 KB or smaller. If your work involves moving gigabytes of these small files, then the SN550 might not be the best choice. Fortunately, most applications like gaming or editing involve much larger files where the WD SSD is at its best.
The SN550 series will begin shipping on January 2020. Note that the base $70 250 GB option will have less than half the write speeds of the top-end 1 TB option.