Western Digital Black SN850X
Western Digital
94 Overall Score
vs
Samsung 990 PRO
Samsung
95 Overall Score
Scores
Laptop
Budget
Console
Gaming
Workstation
Portable
Specifications
| Western Digital Black SN850X | Samsung 990 PRO | |
|---|---|---|
| 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 | ✓ | ✓ |
| Controller | WD 20-82-20035-B1 | Samsung |
| Reliability | ||
| Endurance (TBW) | ||
| MTBF (hours) | ||
| Warranty (years) | 5★ | 1 |
| Features | ||
| Heatsink | ✗ | ✓★ |
| Hardware Encryption | ✗ | ✓★ |
Pros & Cons
Western Digital Black SN850X
- Strong social proof (97th percentile)97th %ile
- Strong random (95th percentile)95th %ile
- Strong capacity (93rd percentile)93rd %ile
- Strong feature (89th percentile)89th %ile
Samsung 990 PRO
- Strong feature (99th percentile)99th %ile
- Strong random (97th percentile)97th %ile
- Strong speed (93rd percentile)93rd %ile
- Strong capacity (93rd percentile)93rd %ile
Pricing
Western Digital Black SN850X0.144score per dollar
vs
Samsung 990 PRO0.120score per dollar
Western Digital Black SN850X offers 1.2x better value for money
Verdict
Winner: Samsung 990 PRO
Scores 95 overall, wins 1 of 6 usage categories and 6 of 18 specs.
