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 32 GB dual-channel DDR5 kit with ECC and registered buffering, validated for SuperMicro CloudDC SuperServer platforms
This 32GB kit uses two 16GB DDR5 4800 registered DIMMs built for SuperMicro CloudDC SuperServer platforms. ECC and registered operation protect data integrity in mission-critical workloads. The modules run at 1.1V with CL40 latency.
Upgrading from lower-capacity or lower-speed registered memory is worth it when virtualization density or database buffer pools hit current limits. The dual-rank 1Rx8 organisation helps fill memory channels efficiently. Systems already at maximum supported capacity or speed will not benefit.
Align the 288-pin modules with the keyed slots and press until the latches click. Common issues include mixing registered and unbuffered DIMMs, populating slots in the wrong order for the specific motherboard, or skipping the BIOS memory training cycle after installation.
| Brand | NEMIX RAM |
|---|---|
| Series | SuperMicro Server/Workstation Compatible Series Memory |
| Model | SuperMicro DDR5 4800MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR38400-618K2 |
| Capacity | 32GB (2 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 | 32GB (2X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT |
Yes, the 32 GB kit is built as a matched pair of 16 GB modules specifically for the SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R platforms, so the 288-pin RDIMM form factor aligns with those server boards.
Power down the server, open the chassis, align each module's notch with the slot key, press straight down until both ejector clips click shut, then verify in BIOS that all 32 GB appear at 4800 MT/s with ECC active.
Replace the kit once the platform's memory health monitoring reports a sustained rise in correctable errors or an uncorrectable error event, as continued operation risks data integrity on the SuperMicro CloudDC SuperServer.
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