The Western Digital WD Black SN850X 2TB wins in 5 out of 6 comparable specs. Its biggest advantage is Sequential Read (1204% better).
WD Blue SA510 1TB wins in 1 spec (MSRP: 61% better).
Recommendation
Choose WD Black SN850X 2TB if you want the best overall performance — especially sequential read.
Choose WD Blue SA510 1TB if msrp matters more to you.
| Spec | Western DigitalWD Black SN850X 2TB | Western DigitalWD Blue SA510 1TB |
|---|---|---|
| Storage | ||
| Capacity | 2000 GB+100% | 1000 GB |
| Type | NVMe SSD | SATA SSD |
| Interface | PCIe Gen4 x4 | SATA 6 Gb/s |
| Form Factor | M.2-2280 | 2.5" |
| NAND Type | TLC | TLC |
| Performance | ||
| Sequential Read | 7,300 MB/s+1204% | 560 MB/s |
| Sequential Write | ||
| 6,600 MB/s+1169% |
| 520 MB/s |
| Endurance (TBW) | 1,200+200% | 400 |
| Features | ||
| DRAM Cache | Yes+100% | No |
| Platform | ||
| Controller | WD in-house | Maxiotek MAP1602 |
| PCIe Gen | 4 | N/A |
| Price | ||
| MSRP | $140 | $55−61% |
| Release Date | Aug 2022 | May 2022 |
