The Western Digital Blue 3D is a solid-state drive in the 2.5" form factor, launched on May 29th, 2017. It is available in capacities ranging from 250 GB to 4 TB. This page reports specifications for the 250 GB variant. With the rest of the system, the Western Digital Blue 3D interfaces using a SATA 6 Gbps connection. The SSD controller is the 88SS1074 Dean from Marvell, a DRAM cache chip is available. Western Digital has installed 64-layer TLC NAND flash on the Blue 3D, the flash chips are made by Toshiba. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. The cache is sized at 7 GB, once it is full, writes complete at 220 MB/s. The Blue 3D is rated for sequential read speeds of up to 560 MB/s and 530 MB/s write; random IO reaches 95K IOPS for read and 84K for writes.
At its launch, the SSD was priced at 90 USD. The warranty length is set to five years, which is an excellent warranty period. Western Digital guarantees an endurance rating of 100 TBW, a relatively low value compared to other SSDs.