DESCRIPTION :
 
Form Factor & Interface
Type: M.2 2280 (single-sided)
Interface: PCIe Gen4 ×4, NVMe 1.4 compliant
Performance
Sequential Speeds:
Read: up to 7,250 MB/s
Write: up to 6,900 MB/s
Random IOPS (4 KB, Q32):
Read: ~1,000,000 IOPS
Write: ~1,400,000 IOPS
Controller & NAND
Controller: Western Digital proprietary Polaris 3 (A101)
Flash Memory: SanDisk (Kioxia) 218‑layer TLC NAND
DRAM: None; uses 64 MB Host Memory Buffer (HMB) and pseudo‑SLC cache for write acceleration
Endurance & Reliability
Rated Endurance: 600 TBW (terabytes written)
Reliability: Built for gaming and high-efficiency use. Tom’s Hardware notes “extremely efficient” power usage and strong random-read performance despite DRAM-less design.
Design & Usage Considerations
Power Efficiency: Designed for laptops, handheld gaming, and mobile systems with up to 100% improvement in power efficiency compared to previous-gen SN770
Software Support: Compatible with WD Dashboard for drive health monitoring and firmware updates; includes Game Mode setting
Warranty & Support
Coverage: 5-year limited warranty or until 600 TBW, whichever occurs first
Based on Western Digital’s durable build and warranty policy, real-world claims may require proof of purchase and proper serial verification (some users report complications if there’s significant lag between manufacturing and sale)