SK Hynix DDR5 32GB 6400 MT/s RDIMM
Brand: SK Hynix | Category: Memory (RAM)
SKU: HMAA4GR7AJR4N-WM | Part #: HMAA4GR7AJR4N-WM | MPN: HMAA4GR7AJR4N-WM
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About the SK Hynix DDR5 32GB 6400 MT/s RDIMM
A single SK Hynix DDR5 32GB RDIMM module delivers up to 2TB of total server memory capacity in a 64-socket Intel Xeon or AMD EPYC system—the scale enterprise data centers demand. The HMAA4GR7AJR4N-WM is built on SK Hynix's proven 1b-nm class DRAM architecture, combining high density with stability for mission-critical workloads. This registered DIMM operates at 6400 MT/s, meeting JEDEC DDR5 standards while supporting the latest Sapphire Rapids Xeon Scalable and Genoa EPYC platforms. With integrated ECC and on-module thermal sensing, SK Hynix ensures data integrity and thermal awareness across demanding compute, database, and AI infrastructure environments.
Infrastructure teams—including storage architects, AI platform engineers, and IT procurement specialists—specify this module for virtualization clusters, high-performance computing, and real-time analytics where memory bandwidth and reliability are non-negotiable. The dual-rank, x4 organization (2Rx4) maximizes channel efficiency, while the 72-bit data path (64-bit + 8-bit ECC) protects against silent data corruption. Operating across 0°C to 85°C case temperatures and drawing just 1.1V, the SK Hynix DDR5 module balances performance with thermal and power budgets. SPD5 hub support with Post Package Repair capability enhances manufacturing flexibility and field reliability. For enterprise deployments requiring certified memory with proven OEM qualification, SK Hynix DDR5 RDIMM modules represent a trusted foundation. Contact Omnixon Global to request a quotation for the HMAA4GR7AJR4N-WM and discuss configuration options for your infrastructure scale.
Key Specifications
- Manufacturer Part Number: HMAA4GR7AJR4N-WM
- Memory Type: DDR5 RDIMM, 32GB capacity at 6400 MT/s
- Organization: 2Rx4 dual rank, 72-bit (64-bit data + 8-bit ECC)
- Voltage & Thermal: 1.1V with on-module temperature sensor, 0°C to 85°C operating range
- Platform Support: Intel Xeon Sapphire Rapids and AMD EPYC Genoa, JEDEC DDR5 standard
- Reliability Features: On-die ECC per DRAM die, SPD5 hub with Post Package Repair support
Technical Specifications
| Brand | SK Hynix |
| Category | Memory (RAM) |
| SKU | HMAA4GR7AJR4N-WM |
| Part Number | HMAA4GR7AJR4N-WM |
| Condition | New |
| Capacity | 32GB |
| Form Factor | RDIMM |
| Speed | 6400 MT/s |
| Manufacturer Part Number | HMAA4GR7AJR4N-WM |
| Memory Type | DDR5 |
| Form Factor | RDIMM (Registered DIMM) |
| Capacity | 32 GB |
| Speed | 6400 MT/s |
| Pin Count | 288-pin |
| Voltage | 1.1 V |
| Ranks | 2Rx4 (Dual Rank, x4 organization) |
| Error Correction | ECC (with on-die ECC per DRAM die) |
| Data Width | 72-bit (64-bit data + 8-bit ECC) |
| DRAM Die Process | 1b-nm class |
| Module Standard | JEDEC DDR5 RDIMM |
| SPD | SPD5 hub with Post Package Repair (PPR) support |
| Thermal Sensor | On-module temperature sensor |
| Operating Temperature | 0°C to 85°C (case) |
| PCB Height | Standard RDIMM low-profile |
| Compatible Platforms | Intel Xeon Scalable (Sapphire Rapids+), AMD EPYC (Genoa+) |
Frequently Asked Questions about SK Hynix DDR5 32GB 6400 MT/s RDIMM
What does the SK Hynix DDR5 32GB 6400 MT/s RDIMM do?
The SK Hynix DDR5 32GB 6400 MT/s RDIMM is enterprise server memory designed for ECC-protected workloads — virtualization hosts, database servers, analytics platforms, and AI training rigs. SK Hynix validates this module against major server vendor compatibility matrices.
What are the headline specs of the SK Hynix DDR5 32GB 6400 MT/s RDIMM?
Key specifications for the SK Hynix DDR5 32GB 6400 MT/s RDIMM: new condition; memory type DDR5; memory capacity 32GB; memory speed 6400 MT/s; memory voltage 1.1V; memory form factor RDIMM. Manufacturer part number HMAA4GR7AJR4N-WM. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.