deepverified comparison
Samsung 990 Pro vs WD Black SN850X — 2 TB PCIe 4.0 NVMe SSD for a gaming desktop
Top pick
The verdict
Our pick → WD Black SN850X 2TB
The 990 Pro is marginally faster and more efficient, but the SN850X delivers near-identical real-world performance for far less money in Switzerland.
Peak speed990 Pro 2TBPrice / valueWD Black SN850X 2TBPower efficiency990 Pro 2TB
- Roughly CHF 75 cheaper at 2 TB in Switzerland for a within-5% read-speed gap
- Same 1200 TBW endurance and 5-year warranty, plus a Game Mode 2.0 tuned for low-latency random access
- For gaming, OS and everyday workloads the speed difference is imperceptible, so value decides it
Specifications
| Specification | 990 Pro 2TB | WD Black SN850X 2TB |
|---|---|---|
| Capacity | 2 TB | 2 TB |
| Warranty | 5 years | 5 years |
| Interface | PCIe 4.0 x4, M.2 2280 | PCIe 4.0 x4, M.2 2280 |
| Price (CHF) | 222 | 145 |
| Random read | 1,400,000 IOPS | 1,200,000 IOPS |
| Endurance (TBW) | 1200 | 1200 |
| Sequential read | 7450 MB/s | 7300 MB/s |
| Sequential write | 6900 MB/s | 6600 MB/s |
✓ marks the stronger value where it is measurable. Below the ~80 Hz crossover and for everyday use, some differences matter less than they look.