WD Black SN740 256 GB (SDDPMQD-256G)

The WD SN740 is a line of internal SSDs for laptops, mini-PCs, and compact systems built on the PCIe 4.0 x4 interface with support for NVMe 1.4b and Western Digital's proprietary TLC 3D NAND. The WD SN740 series spans capacities of 256 GB, 512 GB, 1 TB, and 2 TB, and is available in three M.2 form factors: 2230, 2242, and 2280, making it easy to find the right fit for various motherboards and chassis. Speed specifications vary by capacity: the 256 GB model delivers up to 4000 MB/s read and 2000 MB/s write, the 512 GB offers up to 5000/4000 MB/s, the 1 TB reaches up to 5150/4900 MB/s, and the 2 TB achieves up to 5150/4850 MB/s. Random performance also scales with capacity: up to 240K/470K IOPS for 256 GB, up to 460K/800K IOPS for 512 GB, up to 740K/800K IOPS for 1 TB, and up to 650K/800K IOPS for 2 TB. The WD SN740 series is rated for write endurance from 200 TBW in the base model up to 500 TBW in the highest capacity, operating temperature of 0…85 °C, thickness up to 2.38 mm, and weight ranging from 2.8 to 5.4 g depending on form factor. The WD SN740 is designed for systems where high PCIe Gen4 speeds, low power consumption, compact size, and flexible capacity and format options within a single product line are essential.