Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
Western Digital
94 Overall Score
vs
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 2280
Western Digital
95 Overall Score
What Buyers Say
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 2280
No customer feedback yet
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 2280
95 out of 100 low confidence 9 reviews
All seven verified reviews are overwhelmingly positive, praising the WD_BLACK SN8100 as the fastest Gen5 NVMe SSD with no issues. Users highlight its sustained speeds, strong performance on PCIe 5.0 motherboards, and good value at the time of purchase. One reviewer notes it outlasts other drives in cache performance, and Q&A confirms M.2 2280 form factor with up to 14,900 MBps read speed.
Pros
- Fastest Gen5 NVMe SSD
- No issues of any kind
- Super fast on PCIe 5.0
- Strong sustained speeds
- Good price at time of purchase
Cons
- Expensive (implied by 'if you can afford it')
Performance speed 7
Reliability 2
Value for money 2
Cache performance 1
Compatibility pcie5 1
Price affordability 1
Scores
Console
Gaming
Workstation
Budget
Laptop
Portable
Specifications
| Western Digital WD_BLACK SN850X | Western Digital WD_BLACK SN8100 | |
|---|---|---|
| Drive | ||
| Capacity | ||
| Form Factor | M.2 2280 | M.2 2280 |
| Interface | PCIe 4.0 x4 | PCIe 5.0 x4 |
| Protocol | NVMe | NVMe |
| PCIe Generation | 4 | 5★ |
| External | ✗ | ✗ |
| Performance | ||
| Sequential Read (MB/s) | ||
| Sequential Write (MB/s) | ||
| Random Read (IOPS) | ||
| Random Write (IOPS) | ||
| Hardware | ||
| NAND | TLC | TLC |
| DRAM Cache | ✓ | ✓ |
| Reliability | ||
| Endurance (TBW) | ||
| MTBF (hours) | ||
| Warranty (years) | 3 | 3 |
| Features | ||
| Heatsink | ✓ | ✓ |
| Hardware Encryption | — | ✓★ |
Pros & Cons
Western Digital WD_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 feature (94th percentile)94th %ile
- Strong capacity (93rd percentile)93rd %ile
- Below average affordability (9th percentile)9th %ile
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 2280
- Strong feature (100th percentile)100th %ile
- Strong user sentiment (100th percentile)100th %ile
- Strong random (99th percentile)99th %ile
- Strong speed (98th percentile)98th %ile
Pricing
Western Digital WD_BLACK SN850X 4TB PCIe 4.0 x4 NVMe M.2 22800.144score per dollar
vs
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 22800.394score per dollar
Western Digital WD_BLACK SN8100 1TB PCIe 5.0 x4 NVMe M.2 2280 offers 2.7x better value for money
Verdict
Winner: Western Digital WD_BLACK SN8100
Scores 95 overall, wins 1 of 6 usage categories and 6 of 17 specs.
