Hynix 32GB 6400MHz DDR5 PC5-51200 ECC Registered CL52 288-Pin DIMM 1.2V Single Rank x4 Memory Module – HMCG84AHBRA

SK Hynix 32GB DDR5-6400MHz PC5-51200 ECC Registered CL52 288-Pin DIMM 1.2V Single Rank x4 Memory Module — HMCG84AHBRA

The SK Hynix HMCG84AHBRA is a 32GB DDR5-6400MHz ECC Registered (RDIMM) server memory module operating at 1.2V with CL52 latency. Featuring a 288-pin DDR5 interface and Single Rank x4 (1Rx4) configuration, it delivers enterprise-grade ECC error correction for Intel Xeon Scalable (Sapphire Rapids) and AMD EPYC (Genoa) server platforms requiring DDR5-6400 registered memory. HMCG84AHBRA is the base part number of this SK Hynix 32GB DDR5-6400 1Rx4 RDIMM family.

Key Features

• 32GB DDR5-6400MHz ECC Registered DIMM for next-generation enterprise servers
• DDR5-6400MHz (PC5-51200) for maximum DDR5 server memory bandwidth
• Registered DIMM (RDIMM) for stability in multi-DIMM DDR5 server configurations
• Single Rank x4 (1Rx4) configuration
• 1.2V operation
• 288-pin DDR5 interface — next-generation server memory form factor

Product Specifications

• Part Number: HMCG84AHBRA
• Manufacturer: SK Hynix
• OEM Status: Genuine SK Hynix OEM
• Capacity: 32GB
• Type: DDR5 ECC Registered DIMM (RDIMM)
• Speed: 6400MHz (PC5-51200)
• CAS Latency: CL52
• Voltage: 1.2V
• Rank / Organization: Single Rank x4 (1Rx4)
• Pins: 288-Pin
• ECC: Yes

Memory Specifications

• Capacity: 32GB
• DIMM Type: Registered ECC (RDIMM)
• DDR Generation: DDR5
• Pin Count: 288-Pin
• Rank: Single Rank (1Rx4)
• Voltage: 1.2V
• ECC: Yes (Error-Correcting Code)
• On-Die ECC: Yes (DDR5 native)

Performance Specifications

• Speed: DDR5-6400MHz
• Bandwidth: PC5-51200
• CAS Latency: CL52
• XMP / JEDEC: JEDEC standard

Use Cases

• Enterprise server memory for Intel Xeon Scalable (Sapphire Rapids) platforms
• AMD EPYC (Genoa) server memory requiring DDR5-6400 RDIMM
• Virtualization hosts requiring maximum DDR5 bandwidth
• AI inference and HPC workloads requiring DDR5-6400 performance

Compatibility

• Compatible with servers supporting DDR5-6400 ECC Registered (RDIMM) memory
• Compatible with Intel Xeon Scalable (Sapphire Rapids) and AMD EPYC (Genoa) platforms supporting DDR5-6400
• Functionally equivalent to HMCG84AHBRA472N and other HMCG84AHBRA suffix variants
• Not compatible with DDR4 systems — DDR5 requires DDR5-capable platforms
• Verify server QVL (Qualified Vendor List) before ordering

Frequently Asked Questions

What is the difference between HMCG84AHBRA and HMCG84AHBRA472N?

HMCG84AHBRA is the base part number while HMCG84AHBRA472N is a specific production revision variant — they are functionally equivalent 32GB DDR5-6400 ECC RDIMM 1Rx4 modules.

What is the difference between HMCG84AHBRA (1Rx4) and HMCG88AHBRA471N (2Rx8)?

HMCG84AHBRA is a Single Rank x4 (1Rx4) module while HMCG88AHBRA471N is a Dual Rank x8 (2Rx8) module. Both are 32GB DDR5-6400 ECC RDIMMs but differ in rank organization — verify server QVL.

Is HMCG84AHBRA compatible with Intel Xeon Sapphire Rapids?

Yes, it is compatible with Intel Xeon Scalable Sapphire Rapids server platforms supporting DDR5-6400 ECC RDIMM. Verify your specific server”s QVL before ordering.

The SK Hynix HMCG84AHBRA 32GB DDR5-6400 ECC Registered DIMM delivers maximum-bandwidth next-generation server memory performance. Order today for genuine SK Hynix DDR5 RDIMM quality.