Western Digital Black SN850X
B · High-end PCIe 4.0 x4 M.2 1TB, 2TB, 4TB, 8TB
The Western Digital Black SN850X is a high-end PCIe 4.0 x4 drive, with a DRAM cache, offered in 1TB, 2TB, 4TB, 8TB.
Specifications
InterfacePCIe 4.0 x4
Form factorM.2
ControllerWD 20-82-20035-B2, WD 20-82-000292-B2
NANDTLC · 112L
CacheDRAM
Max sequential7300 / 6600 MB/s
Capacities & endurance
| Capacity | Read MB/s | Write MB/s | TBW | DWPD | Warranty |
|---|---|---|---|---|---|
| 1TB | 7300 | 6600 | — | — | — |
| 2TB | 7300 | 6600 | — | — | — |
| 4TB | 7300 | 6600 | — | — | — |
| 8TB | 7300 | 6600 | — | — | — |
Similar High-end drives
Ratings and tier are from the community SSD database (Gabriel Ferraz / borecraft). Independent testing and open reliability data are being layered in.