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
64 GB DDR5 4800 ECC RDIMM module, 2Rx4 CL40 at 1.1 V, validated for ASUS RS720A-E12-RS24U dual-processor servers
This 64GB DDR5 4800 registered DIMM delivers ECC protection for the ASUS RS720A-E12-RS24U 2U dual-processor server. It operates at 1.1V with CL40 latency and a 2Rx4 organisation using major OEM chips. The 288-pin module installs directly into compatible slots.
Builders working on consumer desktops, laptops, or servers from other vendors cannot use this registered ECC module. Systems requiring unbuffered memory or a different pin layout must look elsewhere.
The single 64GB stick running at PC5-38400 with on-die ECC and register buffering is the specification that determines fit. Verify the motherboard qualified-vendor list before ordering.
| Brand | NEMIX RAM |
|---|---|
| Series | ASUS Server Motherboard Compatible Series Memory |
| Model | ASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR38400-924K1 |
| Capacity | 64GB |
| 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 | 2Rx4 |
| Features | DDR5 ECC Registered RDIMM Server Motherboard Compatible |
| Package Content | 64GB (1X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory |
Yes, the module is a 288-pin DDR5 RDIMM built for the ASUS RS720A-E12-RS24U dual-processor 2U server, so it matches the board's registered DIMM slots.
Align the notch on the module with the slot key, press straight down until both side clips click, then verify in BIOS that all 64GB appear at 4800 MT/s; the step often missed is fully engaging both retaining clips.
Replace it if ECC correctable-error counters climb steadily, if memory diagnostics report uncorrectable errors, or if the server shows repeated crashes tied to the same DIMM slot.
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