Samsung PM991 256GB PCIe 3.0 x4 NVMe M.2 2242
Samsung
38 Overall Score
vs
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 2280
Western Digital
89 Overall Score
Scores
Laptop
Budget
Workstation
Gaming
Console
Portable
Specifications
| Samsung PM991 | Western Digital WD_BLACK SN8100 | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2242 | M.2 2280 |
| Interface | PCIe 3.0 x4 | PCIe 5.0 x4 |
| Protocol | NVMe | NVMe |
| PCIe Generation | 3 | 5★ |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | No data | |
| Sequential Write (MB/s) | No data | |
| Random Read (IOPS) | No data | |
| Random Write (IOPS) | No data | |
| Hardware | ||
| NAND | — | TLC★ |
| DRAM Cache | — | ✓★ |
| Reliability | ||
| Endurance (TBW) | No data | |
| MTBF (hours) | No data | |
| Warranty (years) | — | 3★ |
| Features | ||
| Heatsink | — | ✗ |
| Hardware Encryption | — | ✓★ |
Pros & Cons
Samsung PM991 256GB PCIe 3.0 x4 NVMe M.2 2242
- Strong affordability (83rd percentile)83rd %ile
- Strong social proof (77th percentile)
- Below average feature (15th percentile)15th %ile
- Below average endurance (15th percentile)15th %ile
- Below average capacity (17th percentile)17th %ile
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 2280
- Strong random (98th percentile)98th %ile
- Strong speed (98th percentile)98th %ile
- Strong feature (97th percentile)97th %ile
- Strong social proof (95th percentile)95th %ile
Pricing
Samsung PM991 256GB PCIe 3.0 x4 NVMe M.2 22420.605score per dollar
vs
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 22800.356score per dollar
Samsung PM991 256GB PCIe 3.0 x4 NVMe M.2 2242 offers 1.7x better value for money
Verdict
Winner: Western Digital WD_BLACK SN8100
Scores 89 overall, wins 6 of 6 usage categories and 12 of 17 specs.
