SK hynix HMAA4GR7CJR4N-XN 32G DDR4 3200 RDIMM
The SK hynix HMAA4GR7CJR4N-XN is a 32GB DDR4-3200 ECC Registered DIMM (RDIMM) built for enterprise servers, data centers, virtualization hosts, and database or storage systems. It suits buyers refreshing or expanding DDR4-generation server platforms where registered memory with error correction is required. Note that RDIMMs are generation-specific: they cannot be mixed with DDR5 or unbuffered desktop modules, so verify your platform’s supported memory type before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | HMAA4GR7CJR4N-XN |
| Brand | SK hynix |
| Memory Type | DDR4 ECC RDIMM (Registered DIMM) — required for most 2-socket Intel Xeon and AMD EPYC server platforms of the DDR4 generation |
| Capacity | 32GB |
| Data Rate | 3200 MT/s (actual speed may downclock depending on CPU and population) |
| Speed Grade | PC4-25600R |
| Rank Configuration | 2Rx4 (Dual Rank) |
| Error Correction | ECC Supported |
| CAS Latency | CL22 |
| Operating Voltage | 1.2V |
| Pin Count | 288-pin |
| Form Factor | RDIMM (Registered DIMM) |
| DRAM Organization | x4-based DRAM |
| Data Width | 72-bit (64-bit Data + 8-bit ECC) |
| Memory Bandwidth | 25.6 GB/s (per module, nominal) |
| Compliance | JEDEC DDR4 Standard |
| Operating Temperature | 0°C to 85°C |
| Applications | Enterprise Servers, Data Centers, Cloud Computing, Virtualization Platforms, Database Servers, and Storage Systems |
Good to know
- As an ECC RDIMM, this module is for server/workstation boards that support registered DDR4 only — it is not compatible with consumer desktops and will not run alongside DDR5, LRDIMMs of different configurations, or unbuffered modules in most platforms.
- Within the SK hynix DDR4 RDIMM family, this dual-rank (2Rx4) 32GB module balances density and channel population, a common choice for virtualization hosts and cache/database tiers where balanced DIMM-per-channel population maximizes effective bandwidth.
- Buying tip: when populating multiple channels, install identical model and rank modules per channel to avoid downclocking below 3200 MT/s; confirm your server’s qualified memory list (QVL) for this speed grade.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The SK hynix HMAA4GR7CJR4N-XN is a 32GB DDR4-3200 ECC Registered DIMM (RDIMM) built for enterprise servers, data centers, virtualization hosts, and database or storage systems. It suits buyers refreshing or expanding DDR4-generation server platforms where registered memory with error correction is required. Note that RDIMMs are generation-specific: they cannot be mixed with DDR5 or unbuffered desktop modules, so verify your platform’s supported memory type before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | HMAA4GR7CJR4N-XN |
| Brand | SK hynix |
| Memory Type | DDR4 ECC RDIMM (Registered DIMM) — required for most 2-socket Intel Xeon and AMD EPYC server platforms of the DDR4 generation |
| Capacity | 32GB |
| Data Rate | 3200 MT/s (actual speed may downclock depending on CPU and population) |
| Speed Grade | PC4-25600R |
| Rank Configuration | 2Rx4 (Dual Rank) |
| Error Correction | ECC Supported |
| CAS Latency | CL22 |
| Operating Voltage | 1.2V |
| Pin Count | 288-pin |
| Form Factor | RDIMM (Registered DIMM) |
| DRAM Organization | x4-based DRAM |
| Data Width | 72-bit (64-bit Data + 8-bit ECC) |
| Memory Bandwidth | 25.6 GB/s (per module, nominal) |
| Compliance | JEDEC DDR4 Standard |
| Operating Temperature | 0°C to 85°C |
| Applications | Enterprise Servers, Data Centers, Cloud Computing, Virtualization Platforms, Database Servers, and Storage Systems |
Good to know
- As an ECC RDIMM, this module is for server/workstation boards that support registered DDR4 only — it is not compatible with consumer desktops and will not run alongside DDR5, LRDIMMs of different configurations, or unbuffered modules in most platforms.
- Within the SK hynix DDR4 RDIMM family, this dual-rank (2Rx4) 32GB module balances density and channel population, a common choice for virtualization hosts and cache/database tiers where balanced DIMM-per-channel population maximizes effective bandwidth.
- Buying tip: when populating multiple channels, install identical model and rank modules per channel to avoid downclocking below 3200 MT/s; confirm your server’s qualified memory list (QVL) for this speed grade.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
