Samsung 990 PRO vs WD Black SN850X
Verdict: Samsung 990 PRO wins on raw speed and sustained writes per Tom's Hardware and AnandTech reviews, beating the SN850X by 2-5% in large file transfers. WD Black SN850X offers better value and lower power use according to Notebookcheck and StorageReview. Both are PCIe 4.0 flagships from 2022 with DRAM caches and strong gaming performance.
Winner: Samsung 990 PRO
Samsung 990 PRO: 8.5/10
WD Black SN850X: 8/10
Spec-by-spec comparison
| Samsung 990 PRO | WD Black SN850X | |
|---|---|---|
| Interface | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Max Read Speed | 7450 MB/s | 7300 MB/s |
| Max Write Speed | 6900 MB/s | 6600 MB/s |
| DRAM Cache | Yes | Yes |
Samsung 990 PRO
What works
- Higher sequential speeds on large files
- Strong sustained performance with DRAM
- 5-year warranty with high endurance ratings
What doesn't
- Higher power draw under load
- Premium pricing versus value alternatives
WD Black SN850X
What works
- Excellent value at similar capacities
- Strong gaming-optimized firmware
- Lower idle power consumption
What doesn't
- Slightly lower peak sequential speeds
- Shorter warranty on some capacities
Bottom line
Our pick: Samsung 990 PRO.
View full comparison on GoodPickr
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