SK hynix HMCT04AGERA – 128GB DDR5-5600 ECC Registered Server Memory

Description

The SK hynix HMCT04AGERA is a high-capacity enterprise DDR5 memory module designed for server platforms requiring substantial memory density, ECC reliability, and high memory bandwidth.

With 128GB of capacity and a rated data rate of 5600MT/s, the module provides theoretical peak bandwidth of approximately 44.8GB/s per DIMM. This makes it well suited to demanding workloads such as virtualization, large databases, cloud computing, analytics, scientific computing, and enterprise application hosting.

The module uses a 4Rx4 quad-rank architecture and x4 organization. Its Registered DIMM design is intended for server-class memory controllers and multi-DIMM configurations, while ECC provides error detection and correction capabilities that help improve data integrity and system reliability.

The exact HMCT04AGERA MPN is documented as an SK hynix 128GB DDR5-5600 RDIMM, with PC5-44800R, 4Rx4, 1.1V, and 288-pin specifications. Memory references additionally identify CL52 for this exact base MPN, while other suffix-specific versions may carry different programmed timing profiles.

3. Complete Technical Specification

The exact MPN is consistently cataloged as 128GB DDR5-5600 RDIMM, 4Rx4, PC5-44800R, 1.1V.

Note on timing: Some reseller records report CL46 for HMCT04AGERA, while Memory.NET identifies the exact base MPN as CL52. For a technically conservative store listing, CL52 is used here because it is explicitly associated with the exact HMCT04AGERA record.

4. Applications

The HMCT04AGERA is suitable for:

• Enterprise server memory expansion
• Data-center infrastructure
• High-density virtualization hosts
• Cloud-computing platforms
• Large database servers
• In-memory databases
• Web and application servers
• High-performance computing (HPC)
• AI and data-analytics infrastructure where platform-qualified
• Storage and file servers
• Engineering and scientific computing
• High-memory professional workstations
• Enterprise server consolidation
• Mission-critical applications requiring ECC memory

Its 128GB capacity per DIMM is particularly useful for systems where high memory density is required while minimizing the number of physical DIMMs installed.

5. Compatibility

The HMCT04AGERA is intended for platforms specifically supporting DDR5 ECC Registered DIMMs (RDIMM).

The exact part is listed for enterprise/server platforms including Cisco UCS C245 M8 SFF, where it is identified as a 128GB SK hynix DDR5-5600 RDIMM.

It is also associated with server platforms from major OEMs and is cross-referenced with other 128GB DDR5-5600 RDIMM solutions.

Compatibility Requirements

The host platform should support:

• DDR5 ECC RDIMM
• 5600MT/s DDR5 memory
• 128GB DIMM capacity
• 4Rx4 / quad-rank memory configuration
• 288-pin registered DIMMs
• The specific memory density and rank organization

Important: DDR5 RDIMM is not compatible with standard DDR5 UDIMM or SO-DIMM slots. The motherboard, CPU memory controller, BIOS, and platform firmware must support registered ECC DDR5 memory.

When installing multiple DIMMs, follow the server manufacturer’s recommended memory population sequence. Depending on the CPU and number of populated memory channels, the system may automatically reduce the operating frequency from the module’s maximum rated 5600MT/s.

6. Key Benefits

• 128GB high-density capacity per module
• DDR5-5600 / 5600MT/s high-speed operation
• Up to 44.8GB/s theoretical bandwidth
• ECC for improved data integrity
• Registered DIMM architecture for enterprise servers
• 4Rx4 quad-rank configuration
• 1.1V DDR5 operating voltage
• Standard 288-pin RDIMM form factor
• Ideal for high-density virtualization environments
• Excellent for large databases and memory-intensive applications
• Suitable for cloud and data-center infrastructure
• SK hynix enterprise-grade memory technology
• Exact MPN available in server-memory catalogs and compatibility references

7. SEO Title

SK hynix HMCT04AGERA 128GB DDR5-5600 ECC RDIMM 4Rx4 PC5-44800R Server Memory