WD SN740 256 GB (SDDPTQD-256G-1012)

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