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 32 GB DDR5 registered ECC modules totalling 256 GB at 6400 MT/s with CL52 latency and 1.1 V operation
This 256GB kit contains eight 32GB DDR5 6400 registered DIMMs built for Supermicro servers and workstations. ECC and registered buffering protect data integrity in mission-critical workloads. The 1.1V operating voltage reduces power draw across fully populated memory channels. IT administrators specifying high-capacity configurations for virtualization or database tiers will match the validated part number MR51200-324K8.
Each module uses a standard 288-pin DDR5 RDIMM form factor with 2Rx4 organization and major OEM DRAM from Samsung, Micron or Hynix. No heat spreader is fitted, so airflow across the PCB must be managed by the chassis design. Registered buffering adds one clock cycle of latency but allows the memory controller to drive all eight slots reliably. Installers should verify the motherboard qualification list before populating every channel.
Bare PCBs without spreaders rely on directed server airflow to keep DRAM temperatures within specification at 6400 MT/s. The low 1.1V voltage limits per-module power, helping dense configurations stay within thermal envelopes. Silent operation depends entirely on chassis fan curves; the modules themselves generate no acoustic noise. Sustained write-heavy workloads will raise component temperatures, so adequate slot spacing and front-to-back cooling remain essential.
| Brand | NEMIX RAM |
|---|---|
| Series | SuperMicro Server/Workstation Compatible Series Memory |
| Model | Supermicro DDR5 6400MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR51200-324K8 |
| Capacity | 256GB (8 x 32GB) |
| Speed | DDR5 6400 (PC5 51200) |
| ECC | Yes |
| Buffered/Registered | Registered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.10V |
| Compatible System | Supermicro |
| CAS Latency | CL52 |
| Heat Spreader | No |
| Type | 288-PIN DDR5 RDIMM |
| Rank | 2Rx4 |
| Features | DDR5 ECC Registered RDIMM Server Motherboard Compatible |
| Package Content | 256GB (8X32GB) DDR5 6400MHZ PC5-51200 2Rx4 1.1V CL52 288-PIN ECC RDIMM Registered Server Memory KIT |
The kit is specified at DDR5 6400 (PC5-51200) with a CAS latency of CL52 and operates at 1.1V.
Each module is a 288-pin DDR5 RDIMM, so the board must provide eight DDR5 RDIMM slots for the full 8x32GB kit.
Align the notch on the 288-pin RDIMM with the slot key, press firmly until both retention clips lock, then verify in BIOS that all eight modules are detected at DDR5 6400 CL52.
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