The Western Digital WD Black SN770 1TB wins in 4 out of 6 comparable specs. Its biggest advantage is Sequential Write (825% better).
870 EVO 500GB wins in 2 specs (DRAM Cache: 100% better).
Recommendation
Choose WD Black SN770 1TB if you want the best overall performance — especially sequential write.
Choose 870 EVO 500GB if dram cache matters more to you.
| Spec | Samsung870 EVO 500GB | Western DigitalWD Black SN770 1TB |
|---|---|---|
| Storage | ||
| Capacity | 500 GB | 1000 GB+100% |
| 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 |
| 4,900 MB/s+825% |
| Endurance (TBW) | 300 | 600+100% |
| Features | ||
| DRAM Cache | Yes+100% | No |
| Platform | ||
| Controller | Samsung MKX | WD in-house |
| PCIe Gen | N/A | 4 |
| Price | ||
| MSRP | $40−27% | $55 |
| Release Date | Jan 2021 | Feb 2022 |
