New
Samsung PM991a
Capacity 1TB
Form Factor M.2 2230
Interface PCIe 3.0 x4
Read Speed 3,100 MB/s
NAND TLC
58 Overall Score
Price $249
Snapshot
Pros & Cons
Pros
- Strong random (83rd percentile) 83rd
- Strong social proof (83rd percentile) 83rd
Cons
- Below average endurance (15th 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 T710 | Kingston Fury Renegade SFYRDK/2000G | Corsair MP700 Elite | Lexar Professional NM1090 PRO |
|---|---|---|---|---|---|---|
| Capacity | 1TB | 4TB | 4TB | 2TB | 2TB | 2TB |
| 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 5.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 5.0 x4 |
| Seq Read | 3,100 MB/s | 7,300 MB/s | 14,500 MB/s | 7,300 MB/s | 10,000 MB/s | 14,400 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | - | true | false | true | true | true |
| Endurance | - | 2400 TBW | 2400 TBW | 2000 TBW | 1200 TBW | 1400 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Random | Feature | Capacity | Endurance | Social Proof |
|---|---|---|---|---|---|---|
| Samsung PM991a | 53.8 | 82.6 | 53.3 | 54.8 | 14.5 | 82.5 |
| Western Digital WD_BLACK SN850X Compare | 87.9 | 94.8 | 93.7 | 92.8 | 81.2 | 96.4 |
| Crucial T710 Compare | 98.7 | 98.7 | 85.3 | 92.8 | 86.2 | 82.5 |
| Kingston Fury Renegade SFYRDK/2000G Compare | 92.5 | 93.3 | 93.7 | 78.5 | 94 | 96.4 |
| Corsair MP700 Elite Compare | 94.6 | 96.4 | 99.8 | 78.5 | 87.5 | 47.2 |
| Lexar Professional NM1090 PRO Compare | 98.1 | 98.1 | 97.5 | 78.5 | 89.7 | 40.8 |
Price
Value & Pricing
From $249
Amazon 1 offer From $249
We started tracking prices for this product on Nov 8, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
