New
Samsung PM991a 1TB PCIe 3.0 x4 NVMe M.2 2230
Capacity 1TB
Form Factor M.2 2230
Interface PCIe 3.0 x4
Read Speed 3,100 MB/s
NAND TLC
59 Overall Score
No current retailer price
Snapshot
Pros & Cons
Pros
- Strong random (84th percentile) 84th
- Strong social proof (79th percentile) 79th
Cons
- Below average endurance (14th percentile)
The proof
Performance
Specifications
Full Specifications
Drive
| Capacity | 1000 |
| Form Factor | M.2 2230 |
| Interface | PCIe 3.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 3 |
| External | No |
Performance
| Sequential Read (MB/s) | 3100 |
| Sequential Write (MB/s) | 1400 |
| Random Read (IOPS) | 380000 |
| Random Write (IOPS) | 330000 |
Hardware
| NAND | TLC |
vs Competition
| Spec | Samsung PM991a | Western Digital WD Black SN850X | Crucial T500 | Kingston Fury Renegade SFYRDK/2000G | Seagate FireCuda 530R | SanDisk Western Digital WDS400T1X0M |
|---|---|---|---|---|---|---|
| Capacity | 1TB | 4TB | 2TB | 2TB | 4TB | 4TB |
| Form Factor | M.2 2230 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface | PCIe 3.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 |
| Seq Read | 3,100 MB/s | 7,300 MB/s | 7,400 MB/s | 7,300 MB/s | 7,400 MB/s | 14,900 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | - | true | true | true | false | true |
| Endurance | - | 2400 TBW | 1200 TBW | 2000 TBW | 5050 TBW | 2400 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Random | Feature | Capacity | Endurance | Social Proof |
|---|---|---|---|---|---|---|
| Samsung PM991a | 55.3 | 83.6 | 52.9 | 54.9 | 14.4 | 78.9 |
| Western Digital WD Black SN850X Compare | 88.3 | 95.1 | 93.9 | 92.6 | 80.4 | 95.5 |
| Crucial T500 Compare | 93.8 | 96.4 | 99 | 78.3 | 82.4 | 95.5 |
| Kingston Fury Renegade SFYRDK/2000G Compare | 92.9 | 93.8 | 93.9 | 78.3 | 93.6 | 95.5 |
| Seagate FireCuda 530R Compare | 92.5 | 96.3 | 52.9 | 92.6 | 95.4 | 88 |
| SanDisk Western Digital WDS400T1X0M Compare | 97.6 | 99.1 | 97.5 | 92.6 | 80.4 | 0 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
