WD BLACK SN8100 4TB
4TB · PCIe 5.0 NVMe · 14,900 MB/s read · PassMark #9
Crucial T705 4TB · bare
PCIe 5.0 · 14500/12700 MB/s · 4TB
Crucial T705 4TB · bare takes it — here’s why.
In our weighted Specdex score, WD BLACK SN8100 4TB lands at 85 and Crucial T705 4TB · bare at 92. That puts Crucial T705 4TB · bare ahead by 7 points — a decisive margin driven mostly by its strengths in the categories below.
Pick WD BLACK SN8100 4TB if…
- ✓PassMark Disk Score top-20 (90,416) — sustained-write class-leading
- ✓PCIe 5.0 interface for next-gen platforms (AM5, LGA 1851)
Pick Crucial T705 4TB · bare if…
- ✓M.2 NVMe
- ✓Competitive per-GB cost
- ✓TBW scales with capacity
Winner by scenario
Derived from the sub-score breakdown · not a separate testValue for money
WD BLACK SN8100 4TBSpecdex score per dollar at MSRP
WD BLACK SN8100 4TB more score per dollar ($549 vs $720).
Score breakdown
Specs side-by-side
| Spec | WD BLACK SN8100 4TB | Crucial T705 4TB · bare |
|---|---|---|
| Form factor | M.2 2280 (single-sided) | — |
| Interface | PCIe 5.0 x4 NVMe 2.0 | PCIe 5.0 |
| Sequential read | 14,900 MB/s | — |
| Sequential write | 14,000 MB/s | — |
| Random read | 2,300,000 IOPS | — |
| Random write | 2,400,000 IOPS | — |
| Controller | SanDisk-tuned Silicon Motion SM2508 (6nm, quad Cortex-R8) | — |
| NAND | 218-layer BiCS8 CBA 3D TLC | — |
| DRAM | yes (onboard DRAM) | — |
| Endurance | 2,400 TBW | — |
| Warranty | 5 years | — |
| PassMark Disk Score | 90,416 | — |
| PassMark rank | #9 of 100 consumer SSDs | — |
| Capacity | — | 4TB |
| Read/Write | — | 14500/12700 MB/s |
WD BLACK SN8100 4TB
- +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
Crucial T705 4TB · bare
- +M.2 NVMe
- +Competitive per-GB cost
- +TBW scales with capacity
- −Thermals on Gen 5 drives
- −DRAM-less models slower under sustained load
- −Require heatsinks in many systems
FAQ: WD BLACK SN8100 4TB vs Crucial T705 4TB · bare
Which is better, WD BLACK SN8100 4TB or Crucial T705 4TB · bare? +
Crucial T705 4TB · bare scores 92 on our weighted rubric — ahead by 7. Your best pick depends on the sub-scores above.
Is WD BLACK SN8100 4TB worth the price? +
At $549, WD BLACK SN8100 4TB delivers a Specdex score of 85 — strongest in passmark_disk.
Is Crucial T705 4TB · bare worth the price? +
At $720, Crucial T705 4TB · bare delivers a Specdex score of 92 — strongest in read.
Does WD BLACK SN8100 4TB or Crucial T705 4TB · bare last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is the better value, WD BLACK SN8100 4TB or Crucial T705 4TB · bare? +
WD BLACK SN8100 4TB — more score per dollar ($549 vs $720). Specdex score per dollar at MSRP.