SK hynix HMAA4GR7CJR8N-XN 32G DDR4 3200 RDIMM
The SK hynix HMAA4GR7CJR8N-XN is a 32GB DDR4-3200 ECC registered DIMM built for enterprise servers, data centers, and virtualization or database platforms that need validated memory expansion. Registered DIMMs buffer address and control signals, which supports higher module counts per channel than unbuffered memory — a common requirement for dense virtualization hosts. As with all DDR4 RDIMMs, confirm your platform supports DDR4 specifically, since DDR4 and DDR5 modules are not interchangeable and cannot be mixed.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | HMAA4GR7CJR8N-XN |
| Brand | SK hynix |
| Memory Type | DDR4 ECC RDIMM (Registered DIMM) |
| Capacity | 32GB |
| Data Rate | 3200 MT/s (may clock down depending on CPU and platform support) |
| Speed Grade | PC4-25600R |
| Rank Configuration | 2Rx8 (Dual Rank) |
| Error Correction | ECC Supported (requires platform with ECC-capable memory controller) |
| CAS Latency | CL22 (JEDEC standard timing) |
| Operating Voltage | 1.2V |
| Pin Count | 288-pin |
| Form Factor | RDIMM (Registered DIMM) |
| DRAM Organization | x8-based DRAM |
| Data Width | 72-bit (64-bit Data + 8-bit ECC) |
| Memory Bandwidth | 25.6 GB/s (theoretical peak) |
| 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
- Verify server compatibility before ordering: this module requires an ECC RDIMM slot on a DDR4 platform, and cannot be combined with UDIMMs, LRDIMMs, or any DDR5 memory in the same system.
- Within the DDR4 RDIMM family, the dual-rank 2Rx8 configuration offers a good balance of density and per-channel performance; keeping ranks balanced across channels helps memory bandwidth in multi-channel servers.
- For matched upgrades, purchase modules of the same capacity, speed grade, and rank configuration to populate channels uniformly, and confirm your CPU’s officially supported memory speed list for stable operation.
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 HMAA4GR7CJR8N-XN is a 32GB DDR4-3200 ECC registered DIMM built for enterprise servers, data centers, and virtualization or database platforms that need validated memory expansion. Registered DIMMs buffer address and control signals, which supports higher module counts per channel than unbuffered memory — a common requirement for dense virtualization hosts. As with all DDR4 RDIMMs, confirm your platform supports DDR4 specifically, since DDR4 and DDR5 modules are not interchangeable and cannot be mixed.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model Number | HMAA4GR7CJR8N-XN |
| Brand | SK hynix |
| Memory Type | DDR4 ECC RDIMM (Registered DIMM) |
| Capacity | 32GB |
| Data Rate | 3200 MT/s (may clock down depending on CPU and platform support) |
| Speed Grade | PC4-25600R |
| Rank Configuration | 2Rx8 (Dual Rank) |
| Error Correction | ECC Supported (requires platform with ECC-capable memory controller) |
| CAS Latency | CL22 (JEDEC standard timing) |
| Operating Voltage | 1.2V |
| Pin Count | 288-pin |
| Form Factor | RDIMM (Registered DIMM) |
| DRAM Organization | x8-based DRAM |
| Data Width | 72-bit (64-bit Data + 8-bit ECC) |
| Memory Bandwidth | 25.6 GB/s (theoretical peak) |
| 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
- Verify server compatibility before ordering: this module requires an ECC RDIMM slot on a DDR4 platform, and cannot be combined with UDIMMs, LRDIMMs, or any DDR5 memory in the same system.
- Within the DDR4 RDIMM family, the dual-rank 2Rx8 configuration offers a good balance of density and per-channel performance; keeping ranks balanced across channels helps memory bandwidth in multi-channel servers.
- For matched upgrades, purchase modules of the same capacity, speed grade, and rank configuration to populate channels uniformly, and confirm your CPU’s officially supported memory speed list for stable operation.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
