WD_Black SN8100 4TB NVMe SSD
- Internal Solid State Drive
- 4 TB
- Standard Packaging
- 1
A genuinely fast Gen 5 drive for a PCIe 5.0 system with heavy storage needs, though check whether the newer replacement model is now the better buy at a similar price.
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How it ranks among the 19 internal solid state drives we track
4.7★ across 1,000 Amazon ratings, Bayesian-smoothed toward the category average.
1,000 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
1,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 19 internal solid state drives we track - how the scorecard works · full internal solid state drives data report. Confidence: high - strong rating volume and complete data.Updated 6 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Built for PCIe 5.0 motherboards, this 4TB M.2 2280 NVMe SSD is rated for sequential read speeds up to 14,900MB/s, aimed at gaming rigs and workstations that can use a Gen 5 slot. In an older Gen 3 or Gen 4 slot it still works, just capped lower.
This drive sits at the high end of consumer storage, built for people already running a PCIe 5.0 motherboard rather than as a general upgrade for an older PC. The manufacturer's own listing flags this as a prior-generation model now superseded by a newer Optimus-branded Gen 5 drive, so check current availability and pricing against that successor before buying.
- PCIe 5.0 x4 interface in the M.2 2280 form factor
- Up to 14,900MB/s sequential read
- TLC 3D NAND for endurance under heavy write loads
- Dashboard software for health monitoring on Windows
Who it's for
Suits a gaming or workstation build with a PCIe 5.0 M.2 slot and a real need for very high sequential speed, such as large game libraries, 4K or 8K video editing, or local AI model storage. Not worth the premium for a system stuck on PCIe 3.0 or 4.0, where the extra bandwidth goes unused.
Strengths and trade-offs
Drawn from this product's published specifications.
- Very high sequential speed on a true PCIe 5.0 slot
- 4TB capacity for large game or media libraries
- M.2 2280 form factor fits standard motherboard slots
- Rated speeds only apply on PCIe 5.0 hardware
- Listed by the manufacturer as replaced by a newer generation model
- High-end pricing versus mainstream PCIe 4.0 drives
Performance notes
Rated sequential read speed reaches up to 14,900MB/s and write up to 11,000MB/s on the PCIe 5.0 x4 interface, figures that only apply when installed in a motherboard slot and BIOS that actually run Gen 5. TLC 3D NAND and an M.2 2280 form factor keep it compatible with standard desktop and high-end laptop slots, and average operating power sits around 7.5W, meant to keep thermals manageable under sustained transfers.
Specifications
| Brand | WD_Black |
|---|---|
| Model | WDS400T1X0M |
| Dimensions & fit | |
| Item Weight | 0.3 ounces |
| HardDrive Size | 4 TB |
| Capacity & performance | |
| Digital Storage Capacity | 4 TB |
| Media Speed | 14000 megabytes_per_second |
| Read Speed | 14900 megabytes_per_second |
| Construction & materials | |
| Enclosure Material | Information Not Available |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Desktop, Laptop |
| Connectivity Technology | NVMe, PCIe Gen5 |
| Hard Disk Interface | PCIE x 4 |
| Hardware Connectivity | PCIE x 4 |
| Included components | |
| Customer Package Type | Standard Packaging |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 5 years |
| Other details | |
| Number of Items | 1 |
| Additional Features | ADVANCED RELIABILITY., BREAKNECK SPEEDS, EXPERIENCE PCIe Gen 5 |
| BuiltIn Media | WD_BLACK SN8100 NVMe SSD, Warranty Guide |
| Specific Uses For Product | Gaming, Multimedia, Personal |
| Mfr Part Number | WDS400T1X0M |
| Data Transfer Rate | 14900 megabytes_per_second |
| Hard Disk Form Factor | 22 millimeters |
| Form Factor | M.2 2280 |
| Hard Disk Description | Solid State Drive |
| Hardware Platform | PC |
Other WD_Black internal solid state drives
How it compares
This product against the closest alternatives we track in internal solid state drives.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| WD_Black SN8100 4TB NVMe SSDThis product | 4.7 / 5 | 1,000 | 4.5 / 5 |
| Kingston NV3 1TB M.2 2280 NVMe SSDKingston | 4.7 / 5 | 13,800 | 4.8 / 5 |
| Samsung SSD 870 EVO SATA III 2.5” 1TBSamsung | 4.8 / 5 | 45,500 | 4.7 / 5 |
| Crucial P310 1TB SSDCrucial | 4.7 / 5 | 11,000 | 4.7 / 5 |
| PNY CS900 250GB 2.5" SATA III Internal SSDPNY | 4.7 / 5 | 5,400 | 4.7 / 5 |
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Questions about the WD_Black WDS400T1X0M
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Do I need a special motherboard for the WD_Black SN8100?
To reach its rated speeds you need a PCIe 5.0 M.2 slot; it will still work in a PCIe 3.0 or 4.0 slot but run at that slot's lower speed limit.
What form factor is this drive?
It is a standard M.2 2280 NVMe SSD, the same physical size used by most PCIe 3.0 and 4.0 drives.
Has this drive been discontinued?
The manufacturer's own listing notes it has been replaced by a newer generation model, so it is worth comparing current pricing against that successor.