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
8GB DDR4-2133 ECC UDIMM with 2Rx8 CL15 timing at 1.20V for Lenovo servers
This 8GB DDR4-2133 ECC UDIMM is built for Lenovo servers and workstations that require error-correcting memory. It operates at 1.20V with a CAS latency of CL15 and uses a 2Rx8 rank configuration on a 288-pin PCB. The module is validated for full compatibility with systems specifying part number 4X70K14184.
It fits administrators who need to add ECC capacity to compatible Lenovo hardware without using OEM-labelled sticks. Buyers whose systems demand registered DIMMs, higher speeds, or larger single-module capacities should look at other options. Non-ECC consumer boards and laptops that only accept SO-DIMMs cannot use this module.
Each stick uses Samsung, SK Hynix or Micron components and is tested to match the OEM specification, so the factory warranty remains intact. The lifetime warranty and 60-day return window replace the shorter coverage often tied to third-party memory. Orders are filled with identically matched modules to avoid mixed-rank issues.
| Brand | Lenovo |
|---|---|
| Capacity | 8GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2133 (PC4 17000) |
| CAS Latency | CL15 |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Unregistered |
| Rank | 2Rx8 |
| Chipset | Major Brand Chipset |
Yes, this module fits standard 288-pin DDR4 DIMM sockets and requires an available unbuffered ECC slot on a compatible Lenovo platform.
The system will operate all modules at the speed and timings of the slowest installed kit; mixing different speeds or latencies is functional but not optimal.
Check the BIOS memory summary or run a tool such as dmidecode; it should report 8 GB, DDR4-2133, ECC enabled, and CL15 timings.
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