SK hynix HMCG94BDJMA080N 64GB DDR5-6400 ECC RDIMM Server Memory

The SK hynix HMCG94BDJMA080N is a high-capacity 64GB DDR5-6400 ECC Registered DIMM (RDIMM) designed for compatible enterprise servers, data-center infrastructure, and other professional computing environments. Exact-MPN listings identify this module as 64GB DDR5-6400, 2Rx4, ECC Registered memory, with the PC5-88/64B-MA0-1110 specification.

With a rated speed of 6400 MT/s, the HMCG94BDJMA080N provides high memory bandwidth for modern server platforms and demanding workloads. Its DDR5 architecture is suitable for systems requiring substantial memory throughput for virtualization, databases, cloud computing, analytics, enterprise applications, and other memory-intensive workloads.

The module provides 64GB of capacity in a single DIMM, allowing compatible servers to expand system memory while preserving additional DIMM slots for future upgrades. This high-capacity configuration is particularly useful in enterprise environments where large amounts of RAM are required for multiple virtual machines, large databases, application servers, and professional workloads.

The HMCG94BDJMA080N uses ECC (Error-Correcting Code) memory technology. ECC is designed to detect and correct certain types of memory errors, helping improve data integrity and system stability. This makes ECC memory well suited for servers and data-center environments where reliability and continuous operation are important.

As a Registered DIMM (RDIMM), this module is intended for compatible enterprise server platforms rather than conventional desktop or laptop computers. Registered memory uses register circuitry to help manage the electrical load between the memory controller and DRAM devices, supporting high-capacity server memory configurations.

DDR5-6400 Performance

The HMCG94BDJMA080N operates at DDR5-6400 / 6400 MT/s, providing a high level of memory bandwidth for compatible platforms. Exact-MPN listings consistently identify the module as 64GB 6400MHz DDR5 ECC RDIMM.

The actual operating speed can depend on the server processor, BIOS, memory population, and platform architecture. Customers should therefore confirm the supported memory speed and configuration for their specific server before installation.

2Rx4 Dual-Rank Architecture

The module uses a 2Rx4 dual-rank organization, which is an important specification for enterprise server compatibility and DIMM population planning. The exact HMCG94BDJMA080N is listed as 64GB 2Rx4 PC5-88/64B-MA0-1110.

Enterprise Applications

The SK hynix HMCG94BDJMA080N is suitable for compatible:

• Enterprise servers
• Data-center infrastructure
• Server virtualization
• Cloud computing
• Database servers
• Application servers
• Web hosting
• Enterprise software
• Data analytics
• High-performance computing
• Virtual desktop infrastructure
• AI and other memory-intensive workloads
• Professional computing environments

Compatibility

Because the HMCG94BDJMA080N is DDR5 ECC Registered RDIMM, customers should verify that their server supports the exact memory architecture before purchasing.

Check the following:

• Server model
• Processor generation
• DDR5 RDIMM support
• 64GB DIMM support
• 2Rx4 configuration
• DDR5-6400 support
• Maximum supported memory capacity
• DIMM population requirements
• BIOS/platform compatibility

The actual memory frequency may be reduced by the host platform depending on processor and DIMM configuration.

Technical Specifications