WD_BLACK SN850X 2 TB Review
PCIe 4.0 · 7300 MB/s · Heatsink option
Specdex verdict The WD_BLACK SN850X 2 TB earns Specdex's editor's pick — flagship-tier with no significant weak spots, a clear recommendation in its category.
The PCIe 4.0 reference for gaming — 7,300 MB/s sequential read, BiCS5 TLC, 1,200 TBW endurance and 5-year warranty. The most-recommended NVMe drive for PS5 expansion. Released July 2022.
Specdex doesn't run benchmarks in-house. The verdict is an editorial assessment based on manufacturer specs and public reviewer consensus. See methodology.
WD_BLACK SN850X 2 TB versus its closest rivals
- +Best PCIe 4.0 sustained speed under load
- +5-year warranty
- +Excellent gaming/load times
- −PCIe 4.0 not 5.0
- −Game Mode 2.0 is software gimmick
- −Premium pricing per TB
Who's the WD_BLACK SN850X 2 TB for?
Quick verdicts for the most common buyer profiles, derived from the sub-scores above.
Compute scores trail current top-tier — look at our step-up alternatives below if performance is the priority.
At $219 this is a genuine value play — Specdex score of 90 far exceeds the typical sub-$500 baseline.
Configurations
Available options for the WD_BLACK SN850X 2 TB.
In the box
What you get when you unbox the WD_BLACK SN850X 2 TB.
- SSD
- M.2 mounting screw
- Heatsink (where applicable)
- Software activation key (Pro tier)
Standard contents — region/SKU may vary; confirm at retailer.
Sources & benchmarks
Cited, not generatedSpecdex does not run benchmarks in-house. We're rolling out cited public benchmark data category by category — PassMark for CPUs and GPUs is wired today; DXOMark, RTINGS, Geekbench, and NotebookCheck will follow.
Sources we use when available: PassMark for CPU/GPU, Geekbench Browser for synthetic, DXOMark for camera scores, RTINGS for TVs, monitors, and headphones. See methodology.
Specifications
Verified against Western Digital · 2026-05-11| Specification | Value |
|---|---|
| Capacity | 1 / 2 / 4 / 8 TB |
| Specification | Value |
|---|---|
| Sequential read | 7300 MB/s |
| Sequential write | 6600 MB/s |
| NAND | BiCS5 TLC |
| Endurance | 1200 TBW (2TB) |
| Specification | Value |
|---|---|
| Warranty | 5 years |
| Specification | Value |
|---|---|
| Interface | PCIe 4.0 x4 NVMe 1.4 |
Cheaper alternatives to the WD_BLACK SN850X 2 TB
Same category, at least 20% cheaper, best-scoring picks from our catalog.
Step up from the WD_BLACK SN850X 2 TB
Higher-scoring ssds if you've got more to spend.
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Also consider
Where the WD_BLACK SN850X 2 TB appears on Specdex
Curated lists, spec rankings, and buying guides where this product is mentioned or ranked.