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
96 GB kit of six 16 GB DDR5 4800 ECC registered RDIMMs at CL40 and 1.1 V for Supermicro SYS-221HE servers
This NEMIX RAM kit provides 96 GB of DDR5 4800 memory in six 16 GB registered DIMMs. It is built for the SuperMicro SYS-221HE series of IoT SuperServers where ECC RDIMM modules are required. IT teams upgrading those platforms can populate all channels with a single matched set.
Each module operates at 1.10 V without a heat spreader, relying on the server chassis airflow for cooling. Registered buffering and ECC add minimal latency overhead while keeping signal integrity high under sustained load. Power draw scales with the six-module population but remains within standard DDR5 RDIMM limits.
The kit delivers 96 GB total capacity organised as six single-rank 1Rx8 modules at CL40. This exact rank-per-channel layout is the specification that determines whether the SuperMicro memory controller can train at the rated 4800 MT/s. Systems needing different rank counts or larger per-module densities will not match this configuration.
| Brand | NEMIX RAM |
|---|---|
| Series | SuperMicro Server/Workstation Compatible Series Memory |
| Model | SuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR38400-618K6 |
| Capacity | 96GB (6 x 16GB) |
| 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 | 1Rx8 |
| Features | DDR5 ECC Registered RDIMM Server Motherboard Compatible |
| Package Content | 96GB (6X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT |
Power down the server, open the chassis, and seat each 16 GB module firmly until the ejector clips lock; the step most people miss is confirming the BIOS recognises all 96 GB at 4800 MT/s before closing the case.
The modules have no moving parts and no heat spreaders, so no routine maintenance is required; replacement is only necessary if a module fails, which is covered by the lifetime replacement guarantee.
The CAS latency of CL40 at 4800 MT/s is the primary timing constraint under continuous load; thermals are secondary because the modules operate at the standard 1.1 V without additional cooling.
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