Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
99 Overall Score
vs
SanDisk Optimus GX 7100M 2TB PCIe 4.0 x4 NVMe M.2 2230
SanDisk
76 Overall Score
What Buyers Say
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
SanDisk Optimus GX 7100M 2TB PCIe 4.0 x4 NVMe M.2 2230
No customer feedback yet
Scores
Laptop
Gaming
Workstation
Console
Budget
Portable
Specifications
| Western Digital Black SN850X | SanDisk Optimus GX 7100M | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | M.2 2230 |
| 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) | ||
| Random Write (IOPS) | ||
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | ✓★ | ✗ |
| Controller | WD 20-82-20035-B1 | — |
| Reliability | ||
| Endurance (TBW) | ||
| MTBF (hours) | ||
| Warranty (years) | 5★ | — |
| Features | ||
| Heatsink | ✗ | — |
| Hardware Encryption | ✗ | ✗ |
Pros & Cons
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
SanDisk Optimus GX 7100M 2TB PCIe 4.0 x4 NVMe M.2 2230
- Strong random (96th percentile)96th %ile
- Strong speed (92nd percentile)92nd %ile
- Strong capacity (79th percentile)
- Strong endurance (71st percentile)
- Below average social proof (18th percentile)18th %ile
- Below average affordability (20th percentile)20th %ile
Pricing
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 22800.099score per dollar
vs
SanDisk Optimus GX 7100M 2TB PCIe 4.0 x4 NVMe M.2 22300.129score per dollar
SanDisk Optimus GX 7100M 2TB PCIe 4.0 x4 NVMe M.2 2230 offers 1.3x better value for money
Western Digital Black SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
SanDisk Optimus GX 7100M 2TB PCIe 4.0 x4 NVMe M.2 2230
Verdict
Winner: Western Digital Black SN850X
Scores 99 overall, wins 6 of 6 usage categories and 6 of 18 specs.
