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.
This comparison is partial: only 4 of the 12 specifications are published for both products. The 4TB WD BLACK SN850X NVMe SSD with Heatsink does not list SSD Type, interface / Protocol or Sequential Read / Write.
The main differences to help you choose.
No clear advantage over the 4TB WD BLACK SN850X NVMe SSD with Heatsink in the published specifications. Check the detailed comparison for features that matter to you.
| 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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