新品 促销 22%
Samsung PM991 256GB PCIe 3.0 x4 NVMe M.2 2242
The 256GB PM991 uses a compact M.2 2242 form factor with PCIe 3.0 x4 NVMe, fitting tight spaces in slim laptops while delivering solid sequential speeds. Its budget score of 76.6/100 makes it a cost-effective upgrade for older systems, though portable performance is weak at 9.5/100. Best for users needing a small-capacity, low-cost boot drive in a laptop or mini PC with a 2242 slot.
Capacity 256GB
Form Factor M.2 2242
Interface PCIe 3.0 x4
38 综合评分
价格 US$63
概览
优缺点
优点
- Strong affordability (86th percentile) 86th
- Strong social proof (77th percentile) 77th
缺点
- Below average feature (15th percentile)
- Below average endurance (15th percentile)
- Below average capacity (18th percentile)
实测数据
性能表现
规格参数
完整规格参数
Drive
| Capacity | 256 |
| Form Factor | M.2 2242 |
| Interface | PCIe 3.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 3 |
| External | No |
竞品对比
| Spec | Samsung PM991 | Crucial T500 | Western Digital WD Blue SN5100 | SK Hynix Platinum P41 | Lexar NM790 LNM790X001T-RNNNU | Kingston NV3 SNV3SM3/2T0 |
|---|---|---|---|---|---|---|
| Capacity | 256GB | 1TB | 1TB | 2TB | 1TB | 2TB |
| Form Factor | M.2 2242 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2230 |
| Interface | PCIe 3.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 | PCIe 4.0 x4 |
| Seq Read | - | 7,300 MB/s | 7,100 MB/s | 7,000 MB/s | 7,400 MB/s | 6,000 MB/s |
| Nand Type | - | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | - | true | false | true | false | - |
| Endurance | - | 600 TBW | 600 TBW | 1200 TBW | 1000 TBW | 640 TBW |
| Compare | Compare | Compare | Compare | Compare |
| 产品 | Speed | Random | Feature | Capacity | Endurance | 用户口碑 | Affordability |
|---|---|---|---|---|---|---|---|
| Samsung PM991 | 52.4 | 61.9 | 14.7 | 17.8 | 14.8 | 77.4 | 85.5 |
| Crucial T500 Compare | 91.4 | 96.7 | 98.9 | 55.5 | 83 | 95.4 | 56.3 |
| Western Digital WD Blue SN5100 Compare | 87.1 | 95.7 | 78.8 | 55.5 | 88.1 | 95.4 | 54.5 |
| SK Hynix Platinum P41 Compare | 84.1 | 97.1 | 94 | 78.6 | 85.9 | 46.1 | 59.1 |
| Lexar NM790 LNM790X001T-RNNNU Compare | 89.8 | 93.3 | 53.6 | 55.5 | 93.9 | 95.4 | 49.3 |
| Kingston NV3 SNV3SM3/2T0 Compare | 77.8 | 61.9 | 53.6 | 78.6 | 70 | 87.2 | 22.6 |
价格
性价比分析
最低 US$63
Amazon 1 个报价 最低 US$63
我们自 2026年11月8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37.9
- Budget78.9
- 游戏30.9
- Laptop41.3
- Console15
- Portable9.1
- Workstation31.8
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。
