SanDisk Optimus GX PRO 850X 1TB PCIe 4.0 x4 NVMe M.2 2280
Silicon Power A55 128GB SATA III 2.5"
What Buyers Say
SanDisk Optimus GX PRO 850X 1TB PCIe 4.0 x4 NVMe M.2 2280
Users are highly satisfied with this SSD, praising its fast performance and reliability. One reviewer highlighted the speed for backups, transferring 1GB in about 3 seconds. The brand name is trusted, and all reviews are positive, with no complaints mentioned.
Pros
- Fast data transfer
- Reliable brand
- Good for backups
- Solid performance
Silicon Power A55 128GB SATA III 2.5"
Users generally praise this budget SSD for its excellent value, easy installation, and significant speed improvements over traditional HDDs, especially for reviving older systems or as boot drives for servers and NAS builds. While some note that higher-end drives like the Samsung 860 Pro offer better performance and longer warranties, most agree that for everyday tasks and cost-conscious buyers, this drive performs admirably. A few isolated issues were mentioned, such as one drive going read-only (though RMA was smooth) and a lack of mounting screws, but overall sentiment is highly positive.
Pros
- Excellent value for money
- Easy installation
- Significant speed boost over HDD
- Great for reviving old systems
- Reliable for boot drives in servers/NAS
Cons
- Lower performance than high-end SSDs
- Shorter warranty than competitors
- No mounting screws included
- Potential for drive failure (rare)
- Not for heavy workloads
Scores
Specifications
| SanDisk Optimus GX PRO 850X | Silicon Power A55 | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | 2.5" |
| Interface | PCIe 4.0 x4 | SATA III |
| Protocol | NVMe | SATA |
| PCIe Generation | 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 | SanDisk nCache 4.0 | — |
| Reliability | ||
| Endurance (TBW) | No data | |
| MTBF (hours) | No data | |
| Warranty (years) | 5★ | 1 |
| Features | ||
| Heatsink | ✗ | ✗ |
| Hardware Encryption | ✓★ | — |
Pros & Cons
SanDisk Optimus GX PRO 850X 1TB PCIe 4.0 x4 NVMe M.2 2280
- Strong user sentiment (95th percentile)95th %ile
- Strong random (93rd percentile)93rd %ile
- Strong endurance (88th percentile)88th %ile
- Strong speed (86th percentile)86th %ile
Silicon Power A55 128GB SATA III 2.5"
- Strong affordability (91st percentile)91st %ile
- Strong social proof (78th percentile)
- Below average capacity (7th percentile)7th %ile
- Below average speed (22nd percentile)
- Below average random (22nd percentile)
- Below average endurance (34th percentile)
Pricing
Silicon Power A55 128GB SATA III 2.5" offers 1.9x better value for money
Verdict
Scores 81 overall, wins 6 of 6 usage categories and 10 of 18 specs.
