The WD SN550 series of M.2 NVMe SSD products are available for personal computers

  • SN550
  • M.2 2280
  • PCI Express 3.0 x4
  • NVMe 1.3
  • 250GB, 500GB, 1TB, 2TB
  • Sandisk 96-layer TLC NAND
  • WD controller
  • 1.7M hours MTBF
  • Boost your system’s performance with next-gen NVMe SSDs
  • Over 4 times faster than our SATA SSDs
  • TRIM and S.M.A.R.T. data reporting are supported.
  • Western Digital designed controller and firmware for optimized performance
  • Western Digital SSD dashboard constantly monitors the health of your SSD
  • NVMe drive not compatible with SATA interface

The WD Blue SN550 uses SanDisk branded 96L BiCS4 TLC NAND flash in a single package containing 16 512-gigabit dies. The NAND is in the large chip towards the screw end of the typically-sized 2280 M.2 gumstick. While WD Blue 500GB SN550 has slower sustained write performance than its predecessor, it still offers very competitive performance with competitive pricing. WD Blue does not have RAM buffers like more expensive SSD offerings but the price reflects this. The more expensive WD Black SSD are faster.

SEQUENTIAL READ2400 MB/s2400 MB/s2400 MB/s2400 MB/s
SEQUENTIAL WRITE950 MB/s1750 MB/s1750 MB/s1750 MB/s
ENDURANCE150 TB300 TB600 TB1200 TB
WARRANTY5 years5 years5 years5 years

The high endurance is better than SSD competing products from Sabrent and Crucial for the same market segment. Samsung has the same endurance ratings in their lineup.

A few reports of the SN550 not being recognized may be due to the installation of the SDD in a M.2 SATA slot. Check your motherboard manual for compatibility. Other cases may be resolved with a BIOS update.