Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
94 Overall Score
vs
Kingston A400 240GB SATA III M.2 2280
Kingston
28 Overall Score
What Buyers Say
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
No customer feedback yet
Kingston A400 240GB SATA III M.2 2280
78 out of 100 low confidence 8 reviews
Most users are happy with this Kingston SSD, praising its fast boot times, easy setup, and good value for budget builds. However, one verified reviewer had a very negative experience with Kingston's RMA process, citing delays and poor customer service. Overall, the product itself is well-regarded, but the support experience can be a major drawback.
Pros
- Fast boot times
- Easy setup
- Good value for budget builds
- Reliable so far
- Good build quality
Cons
- Poor RMA support
- Slow customer service
- Limited capacity for gamers
Performance 5
Value for money 4
Ease of setup 3
Reliability 3
Customer support 1
Capacity 2
Scores
Gaming
Console
Workstation
Budget
Laptop
Portable
Specifications
| Western Digital WD_BLACK SN850X | Kingston A400 | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | M.2 2280 |
| Interface | PCIe 4.0 x4 | SATA III |
| Protocol | NVMe | SATA |
| PCIe Generation | 4★ | — |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | ||
| Sequential Write (MB/s) | ||
| Random Read (IOPS) | No data | |
| Random Write (IOPS) | No data | |
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | ✓★ | — |
| Reliability | ||
| Endurance (TBW) | No data | |
| 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
Kingston A400 240GB SATA III M.2 2280
- Strong social proof (87th percentile)87th %ile
- Strong affordability (82nd percentile)82nd %ile
- Below average capacity (11th percentile)11th %ile
- Below average speed (12th percentile)12th %ile
- Below average random (22nd percentile)
- Below average endurance (30th percentile)
Pricing
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 22800.144score per dollar
vs
Kingston A400 240GB SATA III M.2 22800.376score per dollar
Kingston A400 240GB SATA III M.2 2280 offers 2.6x better value for money
Verdict
Winner: Western Digital WD_BLACK SN850X
Scores 94 overall, wins 6 of 6 usage categories and 11 of 16 specs.
