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
Adds 8 GB of DDR4 ECC memory at 2666 MHz with 1Rx8 unbuffered layout for Lenovo servers
This 8 GB DDR4-2666 module matches Lenovo part 4X70S69155 and runs at 1.20 V with ECC protection. It is built for administrators who need to expand memory in supported Lenovo servers without changing the existing configuration.
The stick uses a standard 288-pin DDR4 form factor and a single-rank 1Rx8 organisation, so it seats directly into compatible DIMM slots. Major-brand chips from Samsung, SK Hynix or Micron are used throughout, and every unit is tested for full compatibility before it ships.
Orders are filled with identically matched modules to avoid mixing revisions in the same system. A lifetime warranty backs the memory, and the third-party design keeps the original server warranty intact while costing considerably less than the OEM equivalent.
| Brand | Lenovo |
|---|---|
| Capacity | 8GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2666 (PC4 21300) |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Unbuffered |
| Rank | 1Rx8 |
| Chipset | Major Brand Chipset |
The module operates at 2666 MT/s, which is the PC4-21300 data rate, so the memory bus is capped at that transfer speed when installed in a compatible system.
It fits a standard 288-pin DDR4 DIMM slot; the 1.20 V unbuffered design matches the mechanical keying of server boards that accept 1Rx8 ECC modules.
Align the notch with the slot key, press firmly until both side clips click shut, then verify in BIOS that the 8 GB stick is detected at 2666 MT/s with ECC active.
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