Silicon Power Ace A55 4TB SATA III 2.5"
Silicon Power
46 Overall Score
vs
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
99 Overall Score
What Buyers Say
Silicon Power Ace A55 4TB SATA III 2.5"
No customer feedback yet
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
92 out of 100 medium confidence 17 reviews
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
Speed 6
Value for money 4
Reliability 4
Ps5 compatibility 3
Firmware concerns 2
Installation 2
Scores
Laptop
Gaming
Workstation
Console
Budget
Portable
Specifications
| Silicon Power Ace A55 | Western Digital Black SN850X | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | 2.5" | M.2 2280 |
| Interface | SATA III | PCIe 4.0 x4 |
| Protocol | SATA | NVMe |
| PCIe Generation | — | 4★ |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | No data | |
| Sequential Write (MB/s) | No data | |
| 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) | No data | |
| Warranty (years) | 3 | 5★ |
| Features | ||
| Heatsink | ✗ | ✗ |
| Hardware Encryption | — | ✗ |
Pros & Cons
Silicon Power Ace A55 4TB SATA III 2.5"
- Strong capacity (93rd percentile)93rd %ile
- Strong social proof (78th percentile)
- Below average speed (7th percentile)7th %ile
- Below average affordability (22nd percentile)
- Below average random (22nd 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
Pricing
Silicon Power Ace A55 4TB SATA III 2.5"0.130score per dollar
vs
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 22800.151score per dollar
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280 offers 1.2x better value for money
Verdict
Winner: Western Digital Black SN850X
Scores 99 overall, wins 6 of 6 usage categories and 9 of 18 specs.
