Western Digital Ultrastar DC SN640 960 GB 2.5″ PCI Express 3.1 NVMe 3D TLC
- Performance and Mainstream NVMe SSDs
- Capacities up to 15.36TB1 in U.2 2.5″ form factor
- High-performance PCIe Gen 3
- 96-Layer 3D NAND for Ultrastar DC SN840, DC SN640 and DC SN340
- Up to 780k random read IOPS3
- Dual-port high availability for Ultrastar DC SN840, DC SN200
- Ideal for common enterprise mixed-use workloads
- Enterprise-class reliability rating, 2.5M hour MTBF
Accelerate Access to Critical Data for Data-Intensive Workloads and Applications
Ultrastar NVMe series SSDs perform at the speed of today’s business needs. Enabling faster intelligence & access to critical data, these SSDs meet the growing digital demands of your business applications.
Performance NVMe Ultrastar DC SN840 SSDs deliver extreme performance & ultra-low latency to the top tier of enterprise storage. With proven dual-port NVMe architecture, these drives are best suited for performance demanding platforms including HPC servers, mission-critical applications and workloads that require superior read/write performance and low latency.
Mainstream NVMe Ultrastar DC SN640 SSDs are optimized for consistent quality of service and low latency for mixed random read/write workloads commonly generated by top enterprise applications such as virtualization, OLTP, NoSQL, web servers, file servers and mail servers. Ultrastar DC SN640 enables a seamless transition from SATA SSDs, delivering high performance for deeper insights & faster results for today’s data intensive applications.
| Features |
| Mean time between failures (MTBF) |
2000000 h |
| Uncorrectable Bit Error Rate (UBER) |
< 1 per 10^17 bits read |
| Read latency |
84 µs |
| Random write (4KB) |
44000 IOPS |
| Random read (4KB) |
413000 IOPS |
| Write speed |
1180 MB/s |
| Read speed |
3320 MB/s |
| Component for |
PC/Laptop |
| Memory type |
3D TLC |
| NVMe version |
1.3c |
| NVMe |
Yes |
| Interface |
PCI Express 3.1 |
| SSD form factor |
2.5″ |
| SSD capacity |
960 GB |
| Power |
| Power consumption (idle) |
5 W |
| Power consumption (average) |
5 W |
| Operating voltage |
12 V |
| Weight & dimensions |
| Weight |
95 g |
| Height |
7 mm |
| Depth |
100.5 mm |
| Width |
69.8 mm |
| Operational conditions |
| Storage temperature (T-T) |
-40 – 85 °C |
| Operating temperature (T-T) |
0 – 70 °C |
| General |
| Product family |
Ultrastar |
| Logistics data |
| Harmonized System (HS) code |
84717070 |
