WD BLACK SN8100 4TB Review
4TB · PCIe 5.0 NVMe · 14,900 MB/s read · PassMark #9
Specdex verdict Western Digital's WD BLACK SN8100 4TB is a solid premium pick — strongly recommended, even if it doesn't unseat the category leaders.
The WD BLACK SN8100 4TB scores 90,416 on PassMark Disk Score (rank #9 of ~100 consumer SSDs benchmarked). Score sourced from PassMark Disk Score (July 2026 snapshot).
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 SN8100 4TB versus its closest rivals
- +PassMark Disk Score top-20 (90,416) — sustained-write class-leading
- +PCIe 5.0 interface for next-gen platforms (AM5, LGA 1851)
- −PCIe 5.0 drives run hot — heatsink or motherboard M.2 cooling recommended
- −Pricing varies — confirm current retail before purchase
Who's the WD BLACK SN8100 4TB 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.
Mid-tier pricing at $549 — review whether the score-per-dollar lines up against the cheaper alternatives we recommend.
In the box
What you get when you unbox the WD BLACK SN8100 4TB.
- 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
Source · www.storagereview.com/review/sandisk-wd_black-sn8100-review-elite-performance-in-a-gen5-ssd| Specification | Value |
|---|---|
| DRAM | yes (onboard DRAM) |
| Specification | Value |
|---|---|
| Sequential read | 14,900 MB/s |
| Sequential write | 14,000 MB/s |
| Random read | 2,300,000 IOPS |
| Random write | 2,400,000 IOPS |
| NAND | 218-layer BiCS8 CBA 3D TLC |
| Endurance | 2,400 TBW |
| Specification | Value |
|---|---|
| Warranty | 5 years |
| Specification | Value |
|---|---|
| Form factor | M.2 2280 (single-sided) |
| Interface | PCIe 5.0 x4 NVMe 2.0 |
| Controller | SanDisk-tuned Silicon Motion SM2508 (6nm, quad Cortex-R8) |
| PassMark Disk Score | 90,416 |
| PassMark rank | #9 of 100 consumer SSDs |
Cheaper alternatives to the WD BLACK SN8100 4TB
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Step up from the WD BLACK SN8100 4TB
Higher-scoring ssds if you've got more to spend.
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Also consider
Where the WD BLACK SN8100 4TB appears on Specdex
Curated lists, spec rankings, and buying guides where this product is mentioned or ranked.