Addlink S91 2TB PCIe 4.0 x4 NVMe M.2 2230
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
What Buyers Say
Addlink S91 2TB PCIe 4.0 x4 NVMe M.2 2230
Users are overwhelmingly positive about this SSD, especially for Steam Deck and ROG Ally upgrades. They praise its easy installation, fast performance, and ample storage. Some noted minor issues like slower allocation during downloads and a cloning process that was tricky for non-Linux users, but overall satisfaction is high.
Pros
- Easy installation
- Fast performance
- Large storage capacity
- Compatible with Steam Deck and ROG Ally
- Good value for money
Cons
- Cloning process difficult for non-Linux users
- Slightly slower during download allocation
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
The WD Black SN850X is highly praised for its blazing speed, reliability, and value, often compared favorably to pricier alternatives like Samsung and Solidigm. Users report excellent performance in gaming (especially PS5) and general use, with a few concerns about potential issues mitigated by firmware updates. Overall, it's seen as a top-tier NVMe drive, especially when on sale.
Pros
- Blazing fast speeds
- Excellent value for money
- Reliable high-capacity storage
- Great for PS5
- Easy installation
Cons
- Potential firmware issues
- No heatsink included
- Pricey when not on sale
Scores
Specifications
| Addlink S91 | Western Digital Black SN850X | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2230 | M.2 2280 |
| Interface | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Protocol | NVMe | NVMe |
| PCIe Generation | 4 | 4 |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | ||
| Sequential Write (MB/s) | ||
| Random Read (IOPS) | No data | |
| Random Write (IOPS) | No data | |
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | ✗ | ✓★ |
| Controller | — | WD 20-82-20035-B1 |
| Reliability | ||
| Endurance (TBW) | No data | |
| MTBF (hours) | ||
| Warranty (years) | 5 | 5 |
| Features | ||
| Heatsink | — | ✗ |
| Hardware Encryption | — | ✗ |
Pros & Cons
Addlink S91 2TB PCIe 4.0 x4 NVMe M.2 2230
- Strong social proof (87th percentile)87th %ile
- Strong user sentiment (79th percentile)
- Strong capacity (79th percentile)
- Strong speed (70th percentile)
- Below average affordability (33rd percentile)
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
- Strong random (96th percentile)96th %ile
- Strong social proof (95th percentile)95th %ile
- Strong user sentiment (95th percentile)95th %ile
- Strong capacity (93rd percentile)93rd %ile
- Below average affordability (11th percentile)11th %ile
Verdict
Scores 99 overall, wins 6 of 6 usage categories and 8 of 18 specs.