Western Digital
WD_BLACK SN850X
NVME · 2TB · Released May 9, 2022
Western Digital's flagship gaming NVMe drive pairs a dedicated DRAM cache with an in-house 8-channel controller to sustain 7,300/6,600 MB/s sequential read/write and random IOPS north of a million in each direction. Endurance is rated at 1,200TB written with a 5-year warranty, giving it a DRAM-backed architecture the newer DRAM-less SN7100 lacks even though both hit similar peak throughput. Enthusiasts building a gaming or creative workstation who want that traditional cache reliability profile are the target buyer.
From $369.80 at Amazon.ca · captured 2026-07-30
Specifications
- Capacity
- 2TB
- Interface
- NVME
- Sequential read
- 7300 MB/s
- Sequential write
- 6600 MB/s
- Random read
- 1200000 IOPS
- Random write
- 1100000 IOPS
- PCIe generation
- 4
- Form factor
- M.2 2280
- NAND type
- TLC
- DRAM cache
- Yes
- Controller
- Western Digital in-house 8-channel controller
- Endurance (TBW)
- 1200 TB
- Warranty
- 5 years
Capacities
| Capacity | Part number | Current best price |
|---|---|---|
| 1TB | WDS100T2X0E | $369.80 at Amazon.ca · captured 2026-07-30 |
| 2TB | WDS200T2X0E | — |
| 4TB | WDS400T2X0E | $949.99 at Amazon.ca · captured 2026-08-02 |
| 8TB | WDS800T2X0E | — |
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.