Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
94 Overall Score
vs
Western Digital WD_BLACK SN850X 2TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
95 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_BLACK SN850X 2TB PCIe 4.0 x4 NVMe M.2 2280
88 out of 100 low confidence 8 reviews
The WD Black SN850X is highly praised for its speed, capacity, and value, with users noting fast game loading and smooth video editing. Some mention it runs hot under sustained load, recommending a heatsink. One buyer received an opened, previously formatted unit, raising concerns about 'new' condition, but the drive worked fine.
Pros
- Fast read/write speeds
- Great value for money
- Large storage capacity
- Easy installation
- Reliable performance
Cons
- Runs hot under sustained load
- Possible opened/used unit received
Speed 6
Value for money 4
Capacity 3
Heat generation 2
Reliability 3
Packaging condition 1
Scores
Laptop
Console
Gaming
Workstation
Budget
Portable
Specifications
| Western Digital WD_BLACK SN850X | Western Digital WD_BLACK SN850X | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | M.2 2280 |
| Interface | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Protocol | NVMe | NVMe |
| PCIe Generation | 4 | 4 |
| 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 | 3 |
| Features | ||
| Heatsink | ✓★ | ✗ |
| Hardware Encryption | — | ✓★ |
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_BLACK SN850X 2TB 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 speed (89th percentile)89th %ile
- Below average affordability (25th percentile)
Pricing
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 22800.144score per dollar
vs
Western Digital WD_BLACK SN850X 2TB PCIe 4.0 x4 NVMe M.2 22800.291score per dollar
Western Digital WD_BLACK SN850X 2TB PCIe 4.0 x4 NVMe M.2 2280 offers 2.0x better value for money
Verdict
Tie
Both products are closely matched - Western Digital WD_BLACK SN850X wins 3 specs while Western Digital WD_BLACK SN850X wins 1.
