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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Brute Networks
16 GB DDR4-2666 registered ECC server memory with 1Rx4 organisation, 1.2 V operation and 288-pin form factor, validated for HPE 815098-H21 compatibility
This 16 GB DDR4-2666 registered ECC DIMM is built for HPE server platforms that require 288-pin DDR4 SDRAM at PC4-21300 speed. It operates at 1.20 V with a 1Rx4 organisation and uses major-brand memory chips from Samsung, SK Hynix or Micron. The module is validated for full compatibility and designed to maintain the original factory warranty on supported systems.
It fits administrators expanding memory in compatible HPE servers where registered ECC DDR4-2666 is specified. The single-rank 1Rx4 layout works within the platform’s qualified configuration. Builders needing non-ECC, unbuffered, higher-speed or lower-voltage memory should look elsewhere because this module is fixed at registered ECC DDR4-2666 1.20 V.
Each stick delivers 16 GB of addressable memory and runs at the PC4-21300 data rate, providing headroom for virtualisation workloads and large dataset caching. Capacity scales by populating additional qualified slots up to the server’s maximum supported memory. The module reaches its limit when the platform’s total memory ceiling or rank-per-channel limit is reached.
| Brand | HPE |
|---|---|
| Capacity | 16GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2666 (PC4 21300) |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 1Rx4 |
| Chipset | Major Brand Chipset |
Yes — this module is a 288-pin DDR4 SDRAM with registered ECC and 1.20 V operation, so the host system must support DDR4 registered memory.
Mixing ranks and speeds is possible on many platforms, but the memory controller will run all DIMMs at the lowest common speed and may apply specific population rules; check the server manual for supported configurations.
Enter the BIOS/UEFI or use a tool such as dmidecode to confirm the reported speed is 2666 MT/s, the data width shows ECC, and no memory errors are logged during POST.
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