Western Digital WD_BLACK SN850X 8TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
97 Overall Score
vs
Western Digital WD Black SN770M 2TB PCIe 4.0 x4 NVMe M.2 2230
Western Digital
68 Overall Score
Scores
Workstation
Gaming
Console
Laptop
Budget
Portable
Specifications
| Western Digital WD_BLACK SN850X | Western Digital WD Black SN770M | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | M.2 2230 |
| 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) | No data | |
| Random Read (IOPS) | No data | |
| Random Write (IOPS) | No data | |
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | ✓★ | — |
| Reliability | ||
| Endurance (TBW) | ||
| MTBF (hours) | No data | |
| Warranty (years) | 5 | 5 |
| Features | ||
| Heatsink | ✓★ | — |
Pros & Cons
Western Digital WD_BLACK SN850X 8TB PCIe 4.0 x4 NVMe M.2 2280
- Strong capacity (98th percentile)98th %ile
- Strong random (96th percentile)96th %ile
- Strong social proof (95th percentile)95th %ile
- Strong feature (94th percentile)94th %ile
- Below average affordability (4th percentile)4th %ile
Western Digital WD Black SN770M 2TB PCIe 4.0 x4 NVMe M.2 2230
- Strong endurance (83rd percentile)83rd %ile
- Strong capacity (79th percentile)
- Strong speed (73rd percentile)
- Below average affordability (14th percentile)14th %ile
Pricing
Western Digital WD_BLACK SN850X 8TB PCIe 4.0 x4 NVMe M.2 22800.078score per dollar
vs
Western Digital WD Black SN770M 2TB PCIe 4.0 x4 NVMe M.2 22300.122score per dollar
Western Digital WD Black SN770M 2TB PCIe 4.0 x4 NVMe M.2 2230 offers 1.6x better value for money
Verdict
Winner: Western Digital WD_BLACK SN850X
Scores 97 overall, wins 5 of 6 usage categories and 9 of 16 specs.
