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
High-capacity 128GB DDR4 2666 ECC LRDIMM with 8Rx4 organisation for dense server memory configurations
This 128GB DDR4-2666 LRDIMM targets server administrators who need maximum memory density per slot. The module operates at PC4-21300 speed with a low 1.20V voltage. It uses an 8Rx4 rank configuration to deliver high capacity in a single 288-pin package. ECC and registered buffering protect data integrity in mission-critical workloads.
Each module is built with Samsung, SK Hynix or Micron components that meet or exceed OEM specifications. The part is equivalent to HP 868845-001 and guaranteed compatible with systems requiring this specification. Registered signalling and load-reduced architecture reduce electrical load on the memory controller. This helps maintain stability when populating every available DIMM slot.
This LRDIMM replaces lower-density RDIMMs or LRDIMMs when the platform supports 128GB modules and 8Rx4 organisation. The jump is worth it when virtualisation density, in-memory databases or large dataset caching hit the current memory ceiling. Buyers whose systems cannot address 128GB per slot or require a different rank structure cannot use this module.
| Brand | HP |
|---|---|
| Capacity | 128GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2666 (PC4 21300) |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 8Rx4 |
| Chipset | Major Brand Chipset |
The PC4-21300 designation corresponds to the DDR4 2666 speed grade, giving a theoretical maximum bandwidth of 21300 MB/s.
It fits a standard 288-pin DDR4 DIMM slot; the module height follows the LRDIMM form factor, so verify your server's DIMM clearance before installing.
Load-reduced DIMMs must be populated according to the server manufacturer's memory population guide; skipping the prescribed slot order is the most common error.
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