Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
94 Overall Score
vs
Western Digital WD Blue 250GB PCIe 3.0 x4 NVMe M.2 2280
Western Digital
53 Overall Score
What Buyers Say
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
No customer feedback yet
Western Digital WD Blue 250GB PCIe 3.0 x4 NVMe M.2 2280
72 out of 100 low confidence 9 reviews
Most users are happy with this SSD, praising its easy installation, fast speeds, and great value for money. However, one reviewer reported the drive dying after six months of light use, and another noted that performance drops significantly when the cache is full due to cheaper NAND. Overall, it's seen as a solid budget option, though not the fastest on the market.
Pros
- Easy installation
- Fast speeds
- Great value for money
- Good price/performance ratio
- Reliable for boot drive
Cons
- Drive died after six months
- Performance drops when cache full
- Cheaper NAND used
Performance 5
Value for money 4
Ease of installation 3
Reliability 1
Cache performance 1
Nand quality 1
Scores
Console
Gaming
Workstation
Budget
Laptop
Portable
Specifications
| Western Digital WD_BLACK SN850X | Western Digital WD Blue | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | M.2 2280 |
| Interface | PCIe 4.0 x4 | PCIe 3.0 x4 |
| Protocol | NVMe | NVMe |
| PCIe Generation | 4★ | 3 |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | ||
| Sequential Write (MB/s) | ||
| Random Read (IOPS) | ||
| Random Write (IOPS) | ||
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | ✓★ | ✗ |
| Reliability | ||
| Endurance (TBW) | ||
| MTBF (hours) | ||
| Warranty (years) | 3★ | — |
| Features | ||
| Heatsink | ✓★ | — |
Pros & Cons
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
- Strong random (96th percentile)96th %ile
- Strong social proof (95th percentile)95th %ile
- Strong feature (94th percentile)94th %ile
- Strong capacity (93rd percentile)93rd %ile
- Below average affordability (9th percentile)9th %ile
Western Digital WD Blue 250GB PCIe 3.0 x4 NVMe M.2 2280
- Strong social proof (87th percentile)87th %ile
- Strong random (78th percentile)
- Strong affordability (71st percentile)
- Strong endurance (71st percentile)
- Below average capacity (13th percentile)13th %ile
- Below average user sentiment (29th percentile)
Verdict
Winner: Western Digital WD_BLACK SN850X
Scores 94 overall, wins 5 of 6 usage categories and 11 of 16 specs.