Samsung PM991 256GB PCIe 3.0 x4 NVMe M.2 2242
Samsung
38 Overall Score
vs
SanDisk 2TB SSD PCIe 5.0 x4 NVMe M.2 2280
SanDisk
87 Overall Score
Scores
Workstation
Gaming
Console
Budget
Laptop
Portable
Specifications
| Samsung PM991 | SanDisk 2TB SSD | |
|---|---|---|
| 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 (82nd percentile)82nd %ile
- Strong social proof (78th percentile)
- Below average endurance (15th percentile)15th %ile
- Below average feature (15th percentile)15th %ile
- Below average capacity (18th percentile)18th %ile
SanDisk 2TB SSD PCIe 5.0 x4 NVMe M.2 2280
- Strong feature (100th percentile)100th %ile
- Strong random (100th percentile)100th %ile
- Strong speed (98th percentile)98th %ile
- Strong endurance (81st percentile)81st %ile
- Below average affordability (21st percentile)
Verdict
Winner: SanDisk 2TB SSD
Scores 87 overall, wins 5 of 6 usage categories and 13 of 17 specs.