HPE 731761-B21 – 16GB DDR4 SmartMemory RDIMM
Key Features
- 16GB DDR4 Registered SmartMemory
- 2133 MT/s ECC memory operation
- Dual-rank x4 RDIMM architecture
- Compatible with Gen9 ProLiant servers
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HPE 731761-B21 16GB DDR4 SmartMemory RDIMM
Overview
The HPE 731761-B21 is a 16GB DDR4 Registered SmartMemory module designed for HPE ProLiant Gen9 server platforms requiring enterprise-grade memory reliability and scalability. It is used in virtualization, database, application hosting, and enterprise compute environments where ECC-protected memory stability is required.
The module operates at 2133 MT/s and uses dual-rank x4 architecture with ECC support for improved memory integrity during continuous server operation. Registered DIMM architecture allows higher memory population capacities in multi-processor server deployments.
Its compatibility with HPE Gen9 rack, tower, and blade servers makes it suitable for enterprise data centers, private cloud environments, and virtualization clusters requiring validated SmartMemory support. The module is optimized for balanced memory performance and system reliability under enterprise workloads.
The memory integrates with HPE Active Health System and HPE SmartMemory technologies for authenticated memory operation, enhanced diagnostics, and improved server management visibility within HPE infrastructure environments.
Typical Deployment Scenarios
- VMware and Hyper-V virtualization hosts
- Enterprise database server upgrades
- Private cloud infrastructure expansion
- HPE Gen9 rack server deployments
- Memory scaling for application servers
- Multi-VM enterprise compute environments
Technical Specifications
| Specification | Details |
|---|---|
| Brand | HPE |
| Part Number | 731761-B21 |
| Product Type | Server Memory Module |
| Memory Capacity | 16 GB |
| Memory Technology | DDR4 SDRAM |
| Memory Speed | 2133 MT/s |
| Memory Standard | PC4-2133P |
| DIMM Type | RDIMM |
| Rank Configuration | Dual Rank x4 |
| Error Checking | ECC |
| Signal Processing | Registered |
| CAS Latency | CL15 |
| Voltage | 1.2V |
| Pin Count | 288-Pin |
| Compatibility | HPE ProLiant Gen9 Servers |
Compatibility / Ecosystem
The HPE 731761-B21 is compatible with HPE ProLiant Gen9 rack, tower, and blade servers supporting DDR4 Registered SmartMemory modules. It integrates with HPE SmartMemory validation technologies and supports enterprise workloads requiring ECC-protected memory operation. The module is commonly deployed in DL, ML, and BL-series HPE server environments.
Additional information
| Weight | 0.036 kg |
|---|---|
| Dimensions | 12.7 × 2.5 × 2.5 cm |







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