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
16 GB DDR4-2933 ECC registered RDIMM runs at 1.2 V with 2Rx8 organisation for Lenovo-compatible servers
This 16GB DDR4-2933 ECC Registered RDIMM is built for Lenovo server platforms requiring 288-pin memory. It targets administrators expanding capacity in existing rack deployments to support additional virtual machines or eliminate paging bottlenecks. The module uses major-brand chips and matches the 4ZC7A08741 specification for guaranteed compatibility. Buyers needing non-ECC unbuffered DIMMs or laptop SO-DIMMs should look elsewhere.
Operating at 1.20V, the module follows standard DDR4 voltage levels for registered server memory. Registered buffering reduces electrical load on the memory controller, which helps maintain signal integrity across fully populated channels. Passive cooling relies on chassis airflow; no active cooling components are present on the DIMM itself. Power draw scales with population density and workload intensity.
The single specification that determines fit is the 16GB 2Rx8 Registered ECC DDR4-2933 (PC4-23400) configuration on a 288-pin form factor. This combination of density, rank architecture, error correction and buffering must match the server's qualified vendor list exactly. Systems requiring LRDIMM, different rank counts or non-ECC memory will not accept this module.
| Brand | Lenovo |
|---|---|
| Capacity | 16GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR3 2933 (PC3 23400) |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 2Rx8 |
| Chipset | Major Brand Chipset |
Align the notch on the 288-pin DDR4 RDIMM with the motherboard slot key, press down firmly until both retention clips click. The step people miss is seating both ends evenly; a tilted module will not register.
The module has no moving parts and requires no scheduled maintenance. Replacement is only needed if a memory test reports uncorrectable errors or if capacity must be increased beyond 16GB.
The JEDEC-rated 1.20V operating voltage is the first fixed limit; the module will not exceed this voltage, so thermal headroom and memory-controller timing margins become the practical constraints.
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