- Western Digital NVMe 1.3 compliant controller; PCIe Gen3x4
 - Western Digital BiCS4 96L 3D TLC NAND
 - 0.8 and 2.0 DWPD
 - Full data-loss protection
 - MTBF rating of 2 million hours
 - Instant Secure Erase (ISE) and AES-256 encryption
 
The Ultrastar DC SN640 NVMe SSD is a mainstream NVMe SSD targeting broad deployment as boot, caching, or primary storage in data center IT and cloud environments.