WD Black SN770M 500 GB (WDS500G3X0G)

The WD Black SN770M is a line of compact NVMe SSDs in M.2 2230 form factor designed for portable gaming systems, ultrabooks, and other devices where a short circuit board, high speed, and moderate power consumption are critical. The WD Black SN770M series is available in 500 GB, 1 TB, and 2 TB configurations and uses PCIe Gen4 x4 interface, TLC 3D NAND, and supports Microsoft DirectStorage and Western Digital's nCache 4.0 technology. Within the WD Black SN770M lineup, the 1 TB and 2 TB models deliver read speeds up to 5150 MB/s, while the 500 GB version reaches up to 5000 MB/s; write speeds reach up to 4000 MB/s for 500 GB, up to 4900 MB/s for 1 TB, and up to 4850 MB/s for 2 TB. Random read performance also varies: up to 460K IOPS in 500 GB, up to 740K IOPS in 1 TB, and up to 650K IOPS in 2 TB, while random write across all three models reaches 800K IOPS. The WD Black SN770M series shares consistent dimensions of 30 × 22 × 2.38 mm and weighs approximately 2.8 g, making it suitable for Steam Deck, ASUS ROG Ally, and compatible M.2 2230 devices. Write endurance depends on capacity and ranges from 300 TBW, 600 TBW, and 1200 TBW respectively. In practical terms, the WD Black SN770M is a solution for upgrading a portable gaming device or thin laptop where you need more space for modern games without transitioning to a full-size M.2 2280.