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
32 GB DDR4 ECC UDIMM kit running at 2666 MHz CL19 1.2 V for ASUS server motherboards
This 32GB kit contains four 8GB DDR4 2666 modules built for ASUS server motherboards such as the P11C-C/4L, P11C-M/4L, P11C-X and P11C-X/AUDIO. Each stick is an unbuffered ECC UDIMM running at 1.2V with a CAS latency of CL19. The kit targets administrators who need validated, error-correcting memory for stable server operation.
Modules are stress-tested under load to verify reliability during continuous server workloads. ECC circuitry detects and corrects single-bit errors in real time, preventing data corruption during long-running tasks. The 1Rx8 organisation and 1.2V operation keep power draw predictable while the DDR4 2666 speed maintains consistent throughput.
The 288-pin UDIMM form factor fits directly into standard DDR4 DIMM slots without tools. Populate all four channels on the supported ASUS boards to reach the full 32GB capacity. Common issues include mixing these unbuffered sticks with registered memory or forgetting to enable ECC in the BIOS, which leaves error correction inactive.
| Brand | NEMIX RAM |
|---|---|
| Series | ASUS Server Motherboard Compatible Series Memory |
| Model | ASUS DDR4 2666MHZ ECC Unbuffered UDIMM |
| Part Number | ME21300-818K4 |
| Capacity | 32GB (4 x 8GB) |
| Speed | DDR4 2666 (PC4 21300) |
| ECC | Yes |
| Buffered/Registered | Unbuffered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.20V |
| Compatible System | ASUS |
| CAS Latency | CL19 |
| Heat Spreader | No |
| Type | 288-Pin DDR4 ECC UDIMM |
| Rank | 1Rx8 |
| Features | DDR4 ECC Unbuffered UDIMM Motherboard Compatible |
| Package Content | 32GB (4X8GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 288-PIN ECC Unbuffered UDIMM KIT |
The modules run at standard 1.20 V without a heat spreader, so thermal output matches typical UDIMM ECC DIMMs and does not require extra cooling beyond normal chassis airflow.
Yes, the board needs DDR4 ECC UDIMM capability at 2666 MT/s and four open 288-pin DIMM sockets to install the full 32 GB kit.
The memory controller will down-clock all populated DIMMs to the lowest common speed and tightest shared timings, so mixed-speed ECC UDIMMs will operate together at the slower module's rate.
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