Western Digital’s WD Blue SSDs are mainstream drives in the middle of the company’s consumer product stack, offered at lower price points than the company’s high-performance WD_BLACK products, and positioned above the the WD Green lineup.

What we are looking at today is from the latest generation of WD Blue drives, with the SN550 (announced back in December 2019) replacing the previous SN500 as the PCI Express option in the lineup. (Some WD Blue M.2 SSDs use the SATA standard, rather than NVMe.) This is a DRAM-less drive, and while that typically means value rather than performance, the results might surprise you.

The WD Blue SN550 is rated for higher sequential throughput than the earlier SN500, with top speeds of up to 2,400 MB/s advertised – up from 1,700 MB/s with the SN500. Write speeds vary by capacity, with our 1TB sample rated at up to 1950 MB/s (250GB, 500GB, 1TB, and 2TB capacities are offered).

Pricing looks good for this advertised performance level, with a current retail of $109.99 (Newegg, WD Store) for the 1TB version reviewed today. This is just above the magical 10 cents/GB mark, and currently only $14 more than the SATA M.2 WD Blue 1TB drive (WDS100T2B0B).

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