Samsung 990 Pro 2TB VS WD Black SN850X 2TB
Detailed side-by-side comparison to help you choose the best product
VS
Specifications Comparison
| Specification | Samsung 990 Pro 2TB | WD Black SN850X 2TB |
|---|---|---|
| Price (2TB) | $159.99 | $139.99 |
| Sequential Read | 7,450 MB/s | 7,300 MB/s |
| Sequential Write | 6,900 MB/s | 6,600 MB/s |
| Random Read (IOPS) | 1,400K | 1,200K |
| Random Write (IOPS) | 1,550K | 1,100K |
| Interface | PCIe 4.0 x4 NVMe 2.0 | PCIe 4.0 x4 NVMe 2.0 |
| NAND Type | V-NAND TLC | BiCS5 TLC |
| Controller | Samsung Pascal | WD Custom (in-house) |
| DRAM Cache | 2GB LPDDR4 | 2GB DDR4 |
| Endurance (TBW) | 1,200 TBW | 1,200 TBW |
| Encryption | AES 256-bit hardware | No hardware encryption |
| Heatsink Option | Sold separately | Available with heatsink |
| Warranty | 5 years | 5 years |
| Software | Samsung Magician (excellent) | WD Dashboard (good) |
✓ Samsung 990 Pro 2TB Pros
- Sequential read up to 7,450 MB/s
- Excellent sustained write performance
- Samsung Magician software
- Hardware encryption support
- Low power consumption
- 5-year warranty with 1200 TBW
✗ Samsung 990 Pro 2TB Cons
- Runs warm without heatsink
- Premium price
- Controller can thermal throttle
- No included heatsink on base model
✓ WD Black SN850X 2TB Pros
- Sequential read up to 7,300 MB/s
- Great gaming performance
- Game Mode 2.0 for load times
- Predictive loading technology
- Available with heatsink
- Dashboard software
✗ WD Black SN850X 2TB Cons
- Slightly slower than 990 Pro in sustained writes
- Runs warm
- No hardware encryption
- WD Dashboard less polished than Samsung
Our Verdict
Samsung 990 Pro 2TB is the overall winner in this comparison. It edges ahead with slightly faster sustained performance, better power efficiency, and Samsung’s excellent Magician software suite.
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