Storage capacity
- 4TB WD BLACK SN850X NVMe SSD with Heatsink
- 4TB
- Lexar NM620
- 1TB
Internal ssd comparison
Compare key specifications, features and design side by side.
01Selected ![]() 4TB WD BLACK SN850X NVMe SSD with Heatsink
KSh 65,000Out of Stock | 02 ![]() Lexar NM620 1TB Internal SSD
KSh 24,000In Stock |
|---|







Choose the 4TB WD BLACK SN850X NVMe SSD with Heatsink if you want 4 TB of storage.
The main differences to help you choose.
Its full specifications are in the detailed comparison below.
| Priority | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 |
|---|---|---|
| Storage capacity | 4TB | 1TB |
| Endurance | 2,400 Terabytes Written (TBW) | 500TBW |
| Form factor | M.2 2280 | M.2 2280 NVMe SSD |
Tick a topic above to see how each product answers it.
Explore the full specifications, section by section.
| Specification | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 1TB Internal SSD |
|---|---|---|
| Brand | WD | Lexar |
| Specification | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 1TB Internal SSD |
|---|---|---|
| Endurance | 2,400 Terabytes Written (TBW) | 500TBW |
| Sequential Read / Write | — | Up to 3500MB/s read · Up to 3000MB/s write |
| Random Read / Write | — | 200000 IOPS read · 256000 IOPS write |
| Specification | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 1TB Internal SSD |
|---|---|---|
| Brand / Model | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 · LNM620X001T-RNNNG |
| Storage Capacity | 4TB | 1TB |
| Form Factor | M.2 2280 | M.2 2280 NVMe SSD |
| SSD Type | — | M.2 2280 NVMe SSD |
| Interface / Protocol | — | PCIe Gen 3 x4 / NVMe |
| Specification | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 1TB Internal SSD |
|---|---|---|
| Compatibility | Windows 10/11 & PlayStation 5 | Compatible M.2 2280 PCIe NVMe slots; an M.2 SATA-only slot is not sufficient |
| Features / Security | — | 3D TLC NAND with shock and vibration resistance |
| Specification | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 1TB Internal SSD |
|---|---|---|
| Dimensions / Weight | — | 80 × 22 × 2.25 mm; 9 g |
| Warranty / Package | — | 60 months · 60 months |
| Specification | 4TB WD BLACK SN850X NVMe SSD with Heatsink | Lexar NM620 1TB Internal SSD |
|---|---|---|
| Model-specific details | — | 1TB · LNM620X001T-RNNNG — Product series: NM620; Operating temperature: 0°C to 70°C; Storage temperature: -40°C to 85°C |
These products have the same published specifications.
Choose 4TB WD BLACK SN850X for more storage.
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