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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16 GB DDR4 registered ECC RDIMM running at 2133 MT/s with CL15 latency and 1.20 V operation
This 16 GB registered DDR4 module is built to Lenovo part number 4X70G78062 and runs at 2133 MT/s with CL15 latency. It uses a 2Rx4 organisation and operates at 1.20 V, matching the original OEM specification for supported Lenovo servers.
The module fits systems that accept 288-pin registered ECC DDR4 RDIMMs. It will not work in platforms that require unbuffered UDIMMs or load-reduced LRDIMMs, and it cannot be used in laptops or desktops that take SO-DIMMs.
The single decisive specification is the registered ECC 2Rx4 configuration at DDR4-2133; only motherboards qualified for this exact register and rank arrangement will post reliably with this module.
| Brand | Lenovo |
|---|---|
| Capacity | 16GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2133 (PC4 17000) |
| CAS Latency | CL15 |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 2Rx4 |
| Chipset | Major Brand Chipset |
The module is validated for Lenovo servers that accept 1.20 V DDR4-2133 PC4-17000 registered ECC memory with a 2Rx4 organisation.
Yes — the stick runs at the same 2133 MT/s speed, CL15 latency and 1.20 V voltage, so it will operate alongside identical-spec modules at the platform's default JEDEC profile.
Check the BIOS memory information or OS tools such as dmidecode / lshw; they should report 2133 MT/s, CL15, 1.20 V, registered and ECC enabled for the new DIMM.
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