[ IDENTIFIED PRODUCT // PCIE 4.0 NVME ]
WD_BLACK SN850X 1 TB
1 TB M.2 2280 drive with native PCIe 4.0 x4 NVMe interface. This page is for the exact manufacturer part number shown below; heatsink, capacity and regional variants are not interchangeable.
SKU IDENTIFICATION: Western Digital WDS100T2X0E; capacity 1 TB. Verify the complete label, regional suffix, revision and firmware on the physical drive before installation. Do not transfer ratings to similarly named models or another capacity.
Manufacturer-identified specifications
| Product / exact MPN | WD_BLACK SN850X 1 TB — WDS100T2X0E |
|---|---|
| Capacity / form factor | 1 TB; M.2 2280. |
| Interface / host lanes | PCIe 4.0 x4; NVMe. Full link speed requires a compatible PCIe 4.0 x4 NVMe host; an older supported host may negotiate a lower link. |
| Controller | Not identified in the cited WD/SanDisk product specification. |
| NAND | NAND cell type and generation are not identified in the cited manufacturer references. |
| Sequential performance | Up to 7,300 MB/s read and 6,300 MB/s write. Vendor-rated maximums, not guaranteed sustained host results. |
| Endurance | 600 TBW. The manufacturer TBW rating and warranty limit are not a substitute for backups. |
| Thermal package | This MPN is the bare-drive model; the separate heatsink SKU has different physical clearance. Monitor temperature and allow airflow during sustained transfers. |
Host compatibility, installation & thermal cautions
- Read the motherboard, laptop or console service manual to verify an M.2 M-key socket supports PCIe/NVMe, the 2280 module length, lane allocation, shared ports, BIOS/UEFI boot support, and the required NVMe driver. M.2 shape alone does not establish protocol or boot compatibility.
- Use a PCIe 4.0 x4 NVMe host to approach the listed maxima. PCIe generation and lane width are negotiated; a slower host, chipset sharing, firmware, workload, or thermal throttling reduces throughput.
- This MPN is the bare-drive model; the separate heatsink SKU has different physical clearance. Monitor temperature and allow airflow during sustained transfers. Keep airflow around the controller and follow the host manual's heatsink/thermal-pad instructions; do not stack thermal materials, remove factory cooling, or block ventilation without explicit manufacturer guidance.
- Install only after a full shutdown and removal of standby power as the host manual directs; use ESD precautions. Back up data and retain recovery media and encryption keys before replacement or firmware updates.
- Use firmware and management utilities for this exact capacity and SKU. Monitor SMART health and temperature during sustained writes; performance bursts do not predict long-duration speed or service life.
Manufacturer product, specification & service references
- WD_BLACK SN850X — product and SKU pageWestern Digital/SanDisk product page with SKU selection and model ratings.
- WD_BLACK SN850X — manufacturer support and downloadsOfficial WD product support page for technical documents and service resources; confirm the exact SKU and revision.
Sequential rates are maximum vendor specifications under stated test conditions. Capacity-specific TBW and component identifications are included only where cited manufacturer material supports them; where a component is not disclosed, that is stated explicitly above.