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
A 32GB DDR4 2666MHz ECC LRDIMM module rated CL19 at 1.2V with 288 pins and 2Rx4 organisation for HPE Apollo 4200 G9 servers
This 32GB DDR4 2666MHz ECC LRDIMM module is built for the HPE Apollo 4200 G9 server platform. It delivers registered, load-reduced memory with error correction for stable operation in multi-socket enterprise environments. The single-rank 2Rx4 organisation and 1.2V voltage match the platform's native memory subsystem.
Load-reduced DIMM technology reduces electrical load on the memory bus, allowing higher total capacity per channel than standard registered modules. On-die ECC detects and corrects single-bit errors without software overhead, protecting data integrity during sustained workloads. The CL19 latency and PC4-21300 rating align with the server's qualified memory profile.
Each module provides 32GB; the platform supports up to 2TB when fully populated with 256GB LRDIMMs. This density suits virtualisation hosts, in-memory databases and large-scale analytics where memory capacity drives throughput. Workloads that exceed the 2TB limit or require faster than 2666MHz speeds will need a different server generation.
| Brand | NEMIX RAM |
|---|---|
| Series | HPE Server/Workstation Compatible Series Memory |
| Model | HPE DDR4 2666MHZ ECC LRDIMM Load Reduced Server Memory |
| Part Number | ML21300-324K1 |
| Capacity | 2TB (8 x 256GB) |
| Speed | DDR4 2666 (PC4 21300) |
| ECC | Yes |
| Buffered/Registered | Load Reduced |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.20V |
| Compatible System | HPE |
| CAS Latency | CL19 |
| Heat Spreader | No |
| Type | 288-Pin DDR4 LRDIMM |
| Rank | 2Rx4 |
| Features | DDR4 ECC LRDIMM Load Reduced Server Motherboard Compatible |
| Package Content | 32GB (1X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory |
The module has no battery and requires no firmware updates; ECC error correction runs in hardware for the life of the DIMM.
The DDR4 2666 JEDEC voltage of 1.2V sets the thermal ceiling; sustained throughput caps at the rated PC4-21300 bandwidth before any throttling.
The load-reduced design lowers electrical load on the memory bus, so the module runs at standard DDR4 thermals with no active cooling and zero audible noise.
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