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 768GB registered ECC DDR5 kit of sixteen 48GB modules running at 6400MHz with CAS 52 latency
This 768GB kit contains sixteen 48GB ECC RDIMM modules rated at DDR5 6400 PC5-51200. It is built for servers and workstations that require registered memory with error correction. The kit is not compatible with standard desktop or consumer PC motherboards that use unbuffered DIMMs.
Registered buffering reduces electrical load on the memory controller, allowing all sixteen modules to operate together at the rated 6400 speed. ECC circuitry detects and corrects single-bit errors during continuous operation, while the 1.1V voltage helps maintain thermal stability across the full population of slots.
Each module uses a 2Rx8 organisation, so the kit presents thirty-two ranks to the memory controller. Platforms that limit the number of supported ranks per channel or total system capacity may not recognise the full 768GB. Verify the motherboard rank and capacity limits before purchase.
| Brand | NEMIX RAM |
|---|---|
| Model | Part#: MR51200-4828K16-SM-SYS-112C-TN |
| Part Number | Part#: MR51200-4828K16-SM-SYS-112C-TN |
| Speed | DDR5 6400 (PC5 51200) |
| CAS Latency | 52 |
| Voltage | 1.1V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 2Rx8 |
| Chipset | Major OEM Samsung, Micron, Hynix |
Each module operates at 1.1V, the standard DDR5 voltage, so total power scales with the 768GB capacity rather than exceeding the DDR5 baseline.
Yes, the kit contains 16 registered ECC RDIMMs, so the platform needs 16 DDR5 RDIMM slots and a chipset that enables registered ECC operation.
Mixing 2Rx8 and 1Rx8 ranks is possible only if the motherboard and memory controller explicitly support mixed-rank populations; otherwise the system may not boot or may run at reduced speed.
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