SK hynix HMCG78AGBRA190N – 16GB DDR5-5600 ECC Registered Server Memory

Description

The SK hynix HMCG78AGBRA190N is a high-performance 16GB DDR5 ECC Registered DIMM (RDIMM) engineered for enterprise-class computing environments where memory reliability, scalability, and data integrity are critical.

Operating at 5600MT/s, this module delivers a theoretical peak memory bandwidth of approximately 44.8GB/s, corresponding to the PC5-44800 classification. Its 1Rx8 single-rank architecture uses an x8 organization and is designed specifically for registered server-memory platforms rather than conventional desktop UDIMM systems.

The module incorporates ECC (Error-Correcting Code) technology to help detect and correct certain memory errors, making it suitable for servers and other systems where continuous operation and data integrity are important. The Registered DIMM architecture also provides buffering between the memory controller and DRAM devices, supporting the high-density and multi-DIMM configurations commonly used in enterprise servers.

The HMCG78AGBRA190N is officially listed in server platform compatibility documentation from MSI and Cisco, including server systems using DDR5-5600 memory. Cisco documentation identifies the exact module as a Hynix 16GB 1Rx8 PC5-5600B-RD0-1010-XT DIMM.

This makes the module an excellent choice for server memory expansion, virtualization hosts, database servers, cloud infrastructure, enterprise applications, and high-availability computing platforms.

3. Complete Technical Specification

The 16GB, 1Rx8, DDR5-5600 ECC RDIMM characteristics are corroborated by server qualification documentation and independent module specifications.

4. Applications

The HMCG78AGBRA190N is suitable for:

• Enterprise and data-center servers
• Virtualization hosts
• Cloud-computing infrastructure
• Database servers
• Web and application servers
• File and storage servers
• High-performance computing environments
• Enterprise software platforms
• AI/analytics infrastructure where platform-qualified
• Professional workstation systems supporting DDR5 ECC RDIMM
• Server memory upgrades and capacity expansion
• High-availability and mission-critical computing

5. Compatibility

This module is intended for server platforms that specifically support DDR5-5600 ECC Registered DIMMs (RDIMM).

The exact HMCG78AGBRA190N part number is documented in compatibility/qualification lists for multiple server platforms, including MSI server systems and Cisco UCS server platforms. Cisco identifies it as a Hynix 16GB 1Rx8 PC5-5600B RDIMM, including support in selected Cisco UCS C220 M7, C240 M7 and X210c M7 configurations.

Important compatibility note: DDR5 RDIMM memory is not interchangeable with standard desktop DDR5 UDIMM or laptop SO-DIMM memory. The host server must support ECC RDIMM technology and the required DDR5 speed/rank configuration.

For multi-DIMM installations, memory should ideally be installed according to the server manufacturer’s population rules, including supported ranks, channels, capacities, and speed combinations.

6. Key Benefits

• 16GB capacity for efficient server memory expansion
• DDR5-5600 / 5600MT/s high-speed memory performance
• ECC support for improved data integrity
• Registered DIMM architecture for enterprise server environments
• 1Rx8 single-rank design suitable for qualified DDR5 server platforms
• 44.8GB/s theoretical bandwidth per module
• 1.1V operating voltage for the DDR5 platform
• 288-pin standard server DIMM form factor
• Designed for demanding enterprise workloads
• Suitable for virtualization, databases, cloud and application servers
• SK hynix enterprise/server memory technology
• Exact part number documented in multiple server qualification lists

7. SEO Title

SK hynix HMCG78AGBRA190N 16GB DDR5-5600 ECC RDIMM 1Rx8 Server Memory