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
64 GB DDR4-2666 CL15 ECC LRDIMM module for expanding server memory capacity
This 64GB DDR4-2666 LRDIMM is built for HP-compatible servers that need maximum memory capacity per slot. It targets administrators who run virtualisation hosts, in-memory databases or heavy application workloads and want to extend the life of existing rack infrastructure without replacing hardware.
The module uses a 4Rx4 Load-Reduced organisation with ECC and operates at 1.2V, reducing electrical load on the memory bus so dense configurations remain stable. Its 288-pin DDR4 form factor fits standard server DIMM slots, and the major-brand DRAM ensures compatibility with OEM service contracts and qualified-vendor lists.
This part replaces smaller RDIMMs or LRDIMMs when the platform supports Load-Reduced modules and the workload demands more capacity per channel. The jump is worth it when swapping and paging appear, when virtual-machine density is capped by memory slots, or when the HP 838085-B21 equivalent is specified for the server model.
| Brand | HP |
|---|---|
| Capacity | 64GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2666 (PC4 21300) |
| CAS Latency | CL15 |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Load Reduced |
| Rank | 4Rx4 |
| Chipset | Major Brand Chipset |
The module operates at 2666 MT/s, labelled PC4-21300, with a CAS latency of CL15 at 1.2 V.
It uses the standard 288-pin DDR4 LRDIMM form factor and requires slots that support load-reduced registered memory.
Power down the server, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until both retention clips click, then verify in BIOS that all 64 GB are detected and ECC is enabled.
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