Original Western Digital WD SN770 SSD 250GB 500GB 1TB 2TB Hard Drive Internal Gaming Solid State Drive Gen4 PCIe NVMe M.2 2280 SSD
Here’s a detailed comparison table for the WD Black SN770 NVMe SSD in 250GB, 500GB, 1TB, and 2TB capacities:
WD Black SN770 NVMe SSD Comparison Table
| Specification | 250GB | 500GB | 1TB | 2TB |
|---|---|---|---|---|
| Form Factor | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 |
| NVMe Version | NVMe 1.4 | NVMe 1.4 | NVMe 1.4 | NVMe 1.4 |
| Sequential Read | 4,000 MB/s | 5,000 MB/s | 5,150 MB/s | 5,150 MB/s |
| Sequential Write | 2,000 MB/s | 4,000 MB/s | 4,900 MB/s | 4,850 MB/s |
| Random Read (4K) | 250K IOPS | 500K IOPS | 740K IOPS | 800K IOPS |
| Random Write (4K) | 400K IOPS | 600K IOPS | 800K IOPS | 800K IOPS |
| NAND Type | 3D TLC | 3D TLC | 3D TLC | 3D TLC |
| DRAM Cache | No (HMB) | No (HMB) | No (HMB) | No (HMB) |
| TBW (Endurance) | 200 TBW | 300 TBW | 600 TBW | 1,200 TBW |
| MTBF | 1.75M hours | 1.75M hours | 1.75M hours | 1.75M hours |
| Power Consumption | 5.3W (Active) | 5.7W (Active) | 6.0W (Active) | 6.4W (Active) |
| Encryption | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
| Warranty | 5 years | 5 years | 5 years | 5 years |
| Price (Approx.) | 45−55 | 60−75 | 90−110 | 160−190 |
WD Black Performance Without the Premium Price
The WD Black SN770 delivers PCIe 4.0 speeds at near-PCIe 3.0 prices, offering exceptional value across all capacities. Designed for gamers, streamers, and content creators, this DRAM-less SSD leverages Host Memory Buffer (HMB) technology to achieve impressive performance that rivals more expensive drives.
Key Features & Benefits
âš¡ PCIe 4.0 Performance
- Sequential Read: Up to 5,150 MB/s (1TB/2TB)
- Sequential Write: Up to 4,900 MB/s (1TB)
- 4K Random IOPS: Up to 800K for ultra-responsive performance
🎮 Gaming-Optimized
- WD Black Dashboard for performance monitoring
- Low latency for competitive gaming
- DirectStorage ready for future Windows games
📊 Capacity-Specific Performance
| Capacity | Write Speed | Random IOPS | Endurance (TBW) | Best For |
|---|---|---|---|---|
| 250GB | 2,000 MB/s | 250K/400K | 200 TBW | OS/budget builds |
| 500GB | 4,000 MB/s | 500K/600K | 300 TBW | Mainstream gaming |
| 1TB | 4,900 MB/s | 740K/800K | 600 TBW | Content creation |
| 2TB | 4,850 MB/s | 800K/800K | 1,200 TBW | Workstations |
Who Should Buy the SN770?
🎮 PC Gamers
- Faster level loads than SATA SSDs
- Optimized for DirectStorage (future-proof)
🎬 Content Creators
- Handles 4K video editing smoothly
- Great for streaming setups
💻 Power Users
- Excellent price-to-performance ratio
- Reliable TLC NAND endurance
Why Choose SN770 Over Competitors?
✔ Faster than most DRAM-less SSDs
✔ WD Black reliability at mainstream prices
✔ 5-year warranty
✔ Low power consumption for laptops
Technical Specifications
- Form Factor: M.2 2280
- Interface: PCIe 4.0 x4 NVMe 1.4
- NAND Type: 3D TLC
- Encryption: AES 256-bit
- Warranty: 5 years
Capacity Recommendations
- 250GB: Basic systems
- 500GB: Best budget gaming choice
- 1TB: Sweet spot for most users
- 2TB: Maximum performance & capacity
Real-World Performance
- Game Load Times: 20-30% faster than PCIe 3.0 SSDs
- File Transfers: Copy 50GB files in ~20 seconds
- Thermals: Stays cool under sustained loads
Final Verdict
The WD Black SN770 is the best budget PCIe 4.0 SSD for:
✅ Gamers wanting next-gen speeds
✅ Creators needing fast storage
✅ Upgraders from SATA or PCIe 3.0
Best Value: The 1TB model delivers near-flagship performance at half the cost of premium drives.
Note: While DRAM-less, HMB technology ensures strong real-world performance for most users.
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