Western Digital · PC / gaming
WDS400T2X0E
Black SN850X 4TB
PCIe 4.0 x4 / NVMe · M.2 2280
Exact Amazon US product
$679.99
View on Amazon US ↗New listing · ASIN B0B7CQ2CHH
Price as of Sep 12, 2026 11:43 UTC
The Western Digital WDS400T2X0E is a 4TB Black SN850X SSD for desktop and gaming storage, using PCIe 4.0 x4 / NVMe in a M.2 2280 form factor.
Manufacturer specifications
| Model number | WDS400T2X0E |
|---|---|
| Nominal capacity | 4 TB · 4000 GB |
| NAND | TLC 3D NAND |
| Heatsink | Not included |
| Interface | PCIe 4.0 x4 / NVMe |
| Form factor | M.2 2280 |
| Endurance (TBW) | 2400 |
| Sequential read (up to MB/s) | 7300 |
| Manufacturer limited warranty | 5 years or TBW limit, whichever comes first |
| Sequential write (up to MB/s) | 6600 |
| Documented package codes | WDS400T2X0E-00BCA0 |
Source: Western Digital Black SN850X manufacturer specifications. Reviewed 2026-09-07. Published specifications, not our benchmark results.
What the specifications mean
- Up to 7300 MB/s sequential read, as specified by the manufacturer. This is not a measured game-loading or random-I/O result.
- 2400 TBW rated write endurance. Check the time and endurance limits in the manufacturer warranty together.
Before ordering
Match WDS400T2X0E, 4TB and PCIe 4.0 x4 / NVMe against the selected offer. Check your system’s exact-model compatibility list and the seller’s warranty and return terms.
Amazon US listings
Exact model matches on Amazon.com. A verified ASIN identifies the product; it does not guarantee current stock. Check the selected variant, condition and seller.
Amazon US · ASIN B0B7CQ2CHH
$679.99 · as of Sep 12, 2026 11:43 UTC
Amazon US · ASIN B0BBLF7RTS
$729.99 · as of Sep 12, 2026 04:46 UTC
Amazon US · ASIN B0B7CQ2CHH
$549.99 · as of Sep 12, 2026 11:43 UTC
Same-capacity alternatives with Amazon US links
These models share the drive type, interface class and capacity. Compare their specifications and your system requirements before choosing a replacement.
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CT4000T500SSD3
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Compare with WDS400T2X0E →View on Amazon US ↗ASIN B0DBBG7CG7 · Check price and conditionCrucial · T500
CT4000T500SSD5
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Compare with WDS400T2X0E →View on Amazon US ↗ASIN B0DBBJSGFQ · Check price and conditionWDS400T2X0E questions answered
What is the write endurance of WDS400T2X0E?
The published rating is 2400 TBW. It describes rated writes, not a predicted failure date. Warranty eligibility also depends on the manufacturer's terms.
What connection does WDS400T2X0E need?
WDS400T2X0E requires a M.2 2280 slot that supports PCIe/NVMe. Check supported PCIe generation, available lanes and heatsink clearance; a SATA-only M.2 slot is not sufficient.
How much usable space does WDS400T2X0E provide?
Its nominal capacity is 4000 GB, approximately 3725.3 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.
What warranty is listed for WDS400T2X0E?
Manufacturer specification: 5 years or TBW limit, whichever comes first. A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.