SK hynix HMA42GR7AFR4N-TF 16GB DDR4 2133MHz CL15 ECC Registered Dual Rank 1.2V 288-Pin Server RAM
- 16GB
- 288-Pin DDR4 SDRAM
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NEMIX RAM
128 GB registered DDR5 ECC kit (2 × 64 GB, 4800 MT/s, CL40, 1.1 V, 2Rx4) validated for SuperMicro SuperServer SSG-521E systems
This 128GB kit contains two 64GB registered DDR5 modules built for SuperMicro Storage SuperServer systems. It targets IT professionals who need ECC protection and registered buffering for mission-critical workloads. Each module runs at 4800 MT/s with CL40 latency at 1.10V. The 2Rx4 organisation and 288-pin form factor match the server platform requirements.
Registered DIMMs place a register between the DRAM and the memory controller, reducing electrical load on the CPU and allowing higher capacities per channel. ECC detects and corrects single-bit errors to maintain data integrity under sustained load. The modules require a motherboard with DDR5 RDIMM slots and a chipset that supports registered ECC operation. No heat spreaders are fitted, so airflow across the DIMM area must be sufficient.
Replacing smaller registered kits with this 2 x 64GB set doubles or quadruples available memory without adding DIMMs, freeing slots for future expansion. The jump is worthwhile when virtualisation, database or storage workloads exceed the current capacity and the platform supports 64GB single-rank density. Systems already running DDR5 4800 registered ECC can add this kit directly; platforms limited to UDIMM or lower speeds cannot use these modules.
| Brand | NEMIX RAM |
|---|---|
| Series | SuperMicro Server/Workstation Compatible Series Memory |
| Model | SuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR38400-924K2 |
| Capacity | 128GB (2 x 64GB) |
| Speed | DDR5 4800 (PC5 38400) |
| ECC | Yes |
| Buffered/Registered | Registered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.10V |
| Compatible System | Supermicro |
| CAS Latency | CL40 |
| Heat Spreader | No |
| Type | 288-Pin DDR5 RDIMM |
| Rank | 2Rx4 |
| Features | DDR5 ECC Registered RDIMM Server Motherboard Compatible |
| Package Content | 128GB (2X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT |
CL40 is the rated CAS latency at DDR5 4800; sustained throughput depends on the memory controller and workload pattern rather than latency alone.
Each module runs at 1.10 V without a heat spreader; total power draw scales with access rate and the platform's cooling must handle the combined thermal load.
The kit is validated for SuperMicro Storage SuperServer SSG-521E-E1CR24H, SSG-521E-E1CR24L and X13SEDW-F platforms.
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