The Western Digital WD Black SN770 2TB wins in 3 out of 6 comparable specs. Its biggest advantage is Sequential Read (820% better).
870 EVO 2TB wins in 1 spec (DRAM Cache: 100% better).
Recommendation
Choose WD Black SN770 2TB if you want the best overall performance — especially sequential read.
Choose 870 EVO 2TB if dram cache matters more to you.
| Spec | Samsung870 EVO 2TB | Western DigitalWD Black SN770 2TB |
|---|---|---|
| Storage | ||
| Capacity | 2000 GB | 2000 GB |
| Type | SATA SSD | NVMe SSD |
| Interface | SATA 6 Gb/s | PCIe Gen4 x4 |
| Form Factor | 2.5" | M.2-2280 |
| NAND Type | TLC | TLC |
| Performance | ||
| Sequential Read | 560 MB/s | 5,150 MB/s+820% |
| Sequential Write | 530 MB/s | |
| 4,850 MB/s+815% |
| Endurance (TBW) | 1,200 | 1,200 |
| Features | ||
| DRAM Cache | Yes+100% | No |
| Platform | ||
| Controller | Samsung MKX | WD in-house |
| PCIe Gen | N/A | 4 |
| Price | ||
| MSRP | $130 | $100−23% |
| Release Date | Jan 2021 | Feb 2022 |
