WD Black SN850X
WD Black SN850X 4TB NVMe SSD (WDS400T2X0E)
PCIe 4.0 x4, NVMe 2.0 · M.2 2280 · TLC · Up to 7,200 MB/s Read
MPNWDS400T2X0E
EAN718037891378
CategorySolid State Drives
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Price Trend
Last updated: 2026-09-30Note: this chart shows historical reference pricing for trend insight only — it is not a live quote. To place an order or get current pricing, please contact us or your dedicated sales manager.
Full Specifications
Data sourced from WD product specifications
| Storage | |
| Product Line | Black SN850X |
| Capacity | 4TB |
| Form Factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| NAND Type | TLC |
| Performance | |
| Sequential Read | Up to 7,200 MB/s |
| Sequential Write | Up to 6,300 MB/s |
| Random Read IOPS | 1,200,000 |
| Random Write IOPS | 1,200,000 |
| Endurance & Reliability | |
| Endurance (TBW) | 2,400 TBW |
| MTBF | 1,750,000 hours |
| Warranty | 5 years |
| Product | |
| Brand | WD |
| MPN | WDS400T2X0E |
| EAN | 718037891378 |
| Physical | |
| Weight | 0.181 kg |
| Package Dimensions | 10 x 8 x 1 cm (estimated) |
Support & Downloads
WD Black SN850X 4TB NVMe SSD Firmware Update
WD Support →WD Black SN850X 4TB NVMe SSD Datasheet
WD Support →