Samsung 990 Pro against WD Black SN850X
WD Black SN850X leads on the overall index. Typical prices, not live ones.
The verdict
- Samsung 990 Pro and WD Black SN850X are level on spec score.
- The Samsung 990 Pro typically costs $850 less.
- Per dollar, the Samsung 990 Pro is the better buy: 12.1 points per $100 against 5.8.
Head to head
| Measure | Samsung 990 Pro | WD Black SN850X | Gap |
|---|---|---|---|
| Spec score | 91 | 93 | 2 ptsright |
| Value, points per $100 | 12.1 | 5.8 | 109%left |
| Typical price | $750 | $1,600 | $850left |
| Capacity | 4000 GB | 8000 GB | 100%right |
| Sequential read | 7450 MB/s | 7300 MB/s | 2%left |
| Sequential write | 6900 MB/s | 6600 MB/s | 5%left |
Specifications
| Spec | Samsung 990 Pro | WD Black SN850X |
|---|---|---|
| Interface | NVMe PCIe 4.0 | NVMe PCIe 4.0 |
| Capacity | 4 TB | 8 TB |
| Sequential read | 7,450 MB/s | 7,300 MB/s |
| Sequential write | 6,900 MB/s | 6,600 MB/s |
| DRAM cache | Yes | Yes |
| Brand | Samsung | Western Digital |
| Released | 2023 | 2025 |
| Typical price | $750 | $1,600 |