Western Digital
WD Black SN850X 4TB
PCIe 4.0 · 7300/6600 MB/s · 4TB
86
/ 100
From $360
VS
Crucial T700 1TB wins by 6
Crucial
Crucial T700 1TB
PCIe 5.0 · 12400/11800 MB/s · 1TB
92
/ 100
From $180
Specdex verdict
Crucial T700 1TB takes it — here’s why.
In our weighted Specdex score, WD Black SN850X 4TB lands at 86 and Crucial T700 1TB at 92. That puts Crucial T700 1TB ahead by 6 points — a decisive margin driven mostly by its strengths in the categories below.
Pick WD Black SN850X 4TB if…
- ✓M.2 NVMe
- ✓Competitive per-GB cost
- ✓TBW scales with capacity
Pick Crucial T700 1TB if…
- ✓M.2 NVMe
- ✓Competitive per-GB cost
- ✓TBW scales with capacity
WD Black SN850X 4TB 86
vs 92 Crucial T700 1TB
Score breakdown
WD Black SN850X 4TB
86 read 90
write 88
endurance 88
value 84
Crucial T700 1TB
92 read 98
write 96
endurance 88
value 84
Specs side-by-side
| Spec | WD Black SN850X 4TB | Crucial T700 1TB |
|---|---|---|
| Interface | PCIe 4.0 | PCIe 5.0 |
| Capacity | ▲ 4TB | 1TB |
| Read/Write | 7300/6600 MB/s | 12400/11800 MB/s |
WD Black SN850X 4TB
Pros
- +M.2 NVMe
- +Competitive per-GB cost
- +TBW scales with capacity
Cons
- −Thermals on Gen 5 drives
- −DRAM-less models slower under sustained load
- −Require heatsinks in many systems
Crucial T700 1TB
Pros
- +M.2 NVMe
- +Competitive per-GB cost
- +TBW scales with capacity
Cons
- −Thermals on Gen 5 drives
- −DRAM-less models slower under sustained load
- −Require heatsinks in many systems
FAQ: WD Black SN850X 4TB vs Crucial T700 1TB
Which is better, WD Black SN850X 4TB or Crucial T700 1TB? +
Crucial T700 1TB scores 92 on our weighted rubric — ahead by 6. Your best pick depends on the sub-scores above.
Is WD Black SN850X 4TB worth the price? +
At $360, WD Black SN850X 4TB delivers a Specdex score of 86 — strongest in read.
Is Crucial T700 1TB worth the price? +
At $180, Crucial T700 1TB delivers a Specdex score of 92 — strongest in read.
Does WD Black SN850X 4TB or Crucial T700 1TB 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.