Samsung 990 PRO 2TB vs WD Black SN850X 2TB
Verdict: The Samsung 990 PRO 2TB outperforms the WD Black SN850X 2TB by 150-300 MB/s in sequential transfers and maintains higher speeds during sustained writes according to Tom's Hardware and AnandTech benchmarks. The SN850X counters with better value and Game Mode 2.0 for gamers, but trails in endurance consistency per real-world tests from Notebookcheck. Overall the 990 PRO wins for performance-critical tasks while the SN850X suits budget builds.
Winner: Samsung 990 PRO 2TB
Samsung 990 PRO 2TB: 8.5/10
WD Black SN850X 2TB: 7.8/10
Spec-by-spec comparison
| Samsung 990 PRO 2TB | WD Black SN850X 2TB | |
|---|---|---|
| capacity | 2000 gigabytes | 1000 gigabytes |
| interface | PCIe Gen 4 x4 | PCIe Gen 4 x4 |
| read_speed | 7450 MB/s | 7300 MB/s |
| write_speed | 6900 MB/s | 6600 MB/s |
Samsung 990 PRO 2TB
What works
- Higher sustained write speeds under load
- Better endurance rating at 1200 TBW
- Stronger DRAM cache for consistent performance
What doesn't
- Higher power draw during heavy writes
WD Black SN850X 2TB
What works
- Lower price per terabyte in most markets
- Game Mode 2.0 improves load times in supported titles
What doesn't
- Slightly lower peak sequential speeds
- Lower endurance at 1200 TBW but with less headroom in real use
Bottom line
Our pick: Samsung 990 PRO 2TB.
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