Western Digital WD_BLACK SN770
The WD_BLACK SN770 hits 5,150 MB/s reads and 4,850 MB/s writes over PCIe Gen4, with a DRAM-less TLC design that keeps it affordable. Its 1,200 TBW endurance and 5-year warranty add reliability, while the WD_BLACK Dashboard offers gaming mode and health monitoring. Best for PC gamers upgrading from older Gen3 drives who want fast load times and DirectStorage support without paying a premium.
Snapshot
Pros & Cons
Pros
- Strong random (89th percentile) 89th
- Strong endurance (88th percentile) 88th
- Strong capacity (78th percentile) 78th
- Strong speed (74th percentile) 74th
Cons
- Below average user sentiment (5th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 21 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Drive
| Capacity | 2000 |
| Form Factor | M.2 2280 |
| Interface | PCIe 4.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 4 |
| External | No |
Performance
| Sequential Read (MB/s) | 5150 |
| Sequential Write (MB/s) | 4850 |
| Random Read (IOPS) | 650000 |
| Random Write (IOPS) | 800000 |
Hardware
| NAND | TLC |
| DRAM Cache | No |
Reliability
| Endurance (TBW) | 1200 |
| MTBF (hours) | 1750000 |
| Warranty (years) | 5 |
Features
| Heatsink | No |
vs Competition
| Spec | Western Digital WD_BLACK SN770 | Samsung 9100 PRO | Crucial T710 | Kingston Fury Renegade SFYRDK/2000G | Seagate FireCuda 530R | SanDisk Western Digital WDS400T1X0M |
|---|---|---|---|---|---|---|
| Capacity | 2TB | 8TB | 4TB | 2TB | 4TB | 4TB |
| Form Factor | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 |
| Seq Read | 5,150 MB/s | 14,800 MB/s | 14,500 MB/s | 7,300 MB/s | 7,400 MB/s | 14,900 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | false | true | false | true | false | true |
| Endurance | 1200 TBW | 4800 TBW | 2400 TBW | 2000 TBW | 5050 TBW | 2400 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Random | Feature | Capacity | User Sentiment | Endurance |
|---|---|---|---|---|---|---|
| Western Digital WD_BLACK SN770 | 74.1 | 89 | 53.3 | 78.4 | 5.1 | 87.9 |
| Samsung 9100 PRO Compare | 99 | 99.7 | 99.8 | 98.2 | 0 | 86 |
| Crucial T710 Compare | 98.7 | 98.7 | 85.6 | 92.8 | 0 | 86 |
| Kingston Fury Renegade SFYRDK/2000G Compare | 92.7 | 93.4 | 93.8 | 78.4 | 66.9 | 94 |
| Seagate FireCuda 530R Compare | 92.2 | 96.2 | 53.3 | 92.8 | 65 | 95.6 |
| SanDisk Western Digital WDS400T1X0M Compare | 97.4 | 99 | 97.4 | 92.8 | 0 | 81 |
Price
Value & Pricing
Amazon 1 offer From CA$1,315
We started tracking prices for this product on Nov 8, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
