新品
Samsung PM991 512GB PCIe 4.0 x4 NVMe M.2 2242
The 512GB PM991 pairs PCIe Gen 4 x4 NVMe with TLC NAND, delivering sequential reads up to 3100 MB/s and random reads up to 380K IOPS in a compact M.2 2242 form factor. Its 22 mm x 42 mm size fits 2242 slots directly and can adapt to 2260 or 2280 with a separate adapter, making it flexible for laptops and desktops. This drive suits budget-conscious builders upgrading older systems or compact ultrabooks that need a faster boot and application drive without extra bulk.
Capacity 512GB
Form Factor M.2 2242
Interface PCIe 4.0 x4
NAND TLC
48 综合评分
暂无零售商最新价格
概览
优缺点
优点
- Strong speed (68th percentile) 68th
缺点
- Below average endurance (15th percentile)
- Below average capacity (35th percentile)
实测数据
性能表现
规格参数
完整规格参数
Drive
| Capacity | 512 |
| Form Factor | M.2 2242 |
| Interface | PCIe 4.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 4 |
| External | No |
Hardware
| NAND | TLC |
竞品对比
| Spec | Samsung PM991 | Kingston FURY Renegade SFYRDK/4000G | Western Digital WD_BLACK WDS800T2XHE | Lexar NM1090 PRO | Crucial T705 CT4000T705SSD5 | Team Group T-FORCE G70 PRO TM8FFH004T0C128 |
|---|---|---|---|---|---|---|
| Capacity | 512GB | 4TB | 8TB | 4TB | 4TB | 4TB |
| Form Factor | M.2 2242 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 | M.2 |
| Interface | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 | PCIe 5.0 x4 | PCIe 5.0 x4 | PCIe 4.0 |
| Seq Read | - | 7,300 MB/s | 7,200 MB/s | 14,000 MB/s | 14,100 MB/s | 7,400 MB/s |
| Nand Type | TLC | TLC | TLC | SLC | TLC | TLC |
| Dram Cache | - | true | true | true | true | true |
| Endurance | - | 4000 TBW | 4800 TBW | 2800 TBW | - | 2960 TBW |
| Compare | Compare | Compare | Compare | Compare |
| 产品 | Speed | Random | Feature | Capacity | Endurance | Affordability |
|---|---|---|---|---|---|---|
| Samsung PM991 | 67.8 | 61.7 | 53.6 | 34.6 | 14.6 | 62.7 |
| Kingston FURY Renegade SFYRDK/4000G Compare | 93.3 | 94.4 | 94 | 92.6 | 94 | 9 |
| Western Digital WD_BLACK WDS800T2XHE Compare | 87.6 | 96.4 | 94 | 98.1 | 88.2 | 3.9 |
| Lexar NM1090 PRO Compare | 98.1 | 98.5 | 97.6 | 92.6 | 75.1 | 9.7 |
| Crucial T705 CT4000T705SSD5 Compare | 97.9 | 98 | 97.6 | 92.6 | 57.3 | 9.1 |
| Team Group T-FORCE G70 PRO TM8FFH004T0C128 Compare | 92.9 | 81.1 | 94 | 92.6 | 81.9 | 13.9 |
价格
性价比分析
我们自 2026年11月9日 起追踪该产品的价格。数据增多后将显示图表。
使用场景评分
- 总体48.3
- Budget73.2
- 游戏40.2
- Laptop52.9
- Console38
- Portable11.8
- Workstation43.3
完整评测即将发布。上方的规格、评分、价格和图表始终保持最新。
