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
Eight 16 GB DDR5 ECC registered DIMMs running at 4800 MT/s with CL40 latency and 1.1 V operation
This registered DDR5 kit provides 128GB across eight 16GB modules for the ASUS Z13PE-D16 server board. It targets administrators who need error-correcting memory for virtualisation hosts, database nodes or compute clusters. The 1Rx8 organisation and PC5-38400 rating match the platform's validated memory list.
Operating at 1.10V, the modules draw minimal power and generate low heat without a heat spreader. Registered buffering reduces electrical load on the memory controller, keeping system thermals stable during sustained workloads. Fan noise remains unchanged from baseline because the DIMMs add no active cooling requirement.
The eight-module kit fills all channels on a dual-socket board, enabling maximum bandwidth and capacity in one purchase. ECC and registered operation protect data integrity for mission-critical services. No extra software or accessories are included; the value is the validated compatibility and pre-tested module matching.
| Brand | NEMIX RAM |
|---|---|
| Series | ASUS Server Motherboard Compatible Series Memory |
| Model | ASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR38400-618K8 |
| Capacity | 128GB (8 x 16GB) |
| Speed | DDR5 4800 (PC5 38400) |
| ECC | Yes |
| Buffered/Registered | Registered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.10V |
| Compatible System | ASUS |
| CAS Latency | CL40 |
| Heat Spreader | No |
| Type | 288-Pin DDR5 RDIMM |
| Rank | 1Rx8 |
| Features | DDR5 ECC Registered RDIMM Server Motherboard Compatible |
| Package Content | 128GB (8X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT |
Populate all eight 288-pin DDR5 slots, one 1Rx8 module per channel; the common mistake is skipping a channel or mixing ranks, which prevents the board from training at 4800 MT/s.
No routine maintenance is required; if a module fails, replace the single 16GB 1Rx8 stick — the kit has no heat spreader, so dust can be cleared with compressed air during normal server cleaning.
The CL40 latency at 4800 MT/s is the first bottleneck; bandwidth scales with all eight channels filled, but latency stays fixed at 40 cycles unless the platform supports a lower CAS setting.
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