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
32GB DDR4-2666 ECC registered RDIMM with CL15 latency and 1.2V operation for Dell-compatible server upgrades
This 32 GB DDR4-2666 module is an ECC registered RDIMM built for Dell servers that accept the TN78Y part number. It runs at 1.2 V with a CAS latency of CL15 and uses a 2Rx4 rank configuration on a 288-pin interface. The module is designed to maximise installed memory capacity in compatible rack or tower systems.
This memory suits IT teams who need to increase virtual-machine density or eliminate paging on existing Dell platforms that require registered ECC DDR4 at 2666 MT/s. It is not for workstations or desktops that only accept unbuffered non-ECC modules, nor for systems that demand a different voltage, rank layout or speed grade.
Before ordering, confirm the server’s qualified-vendor list includes the TN78Y equivalent and that free 288-pin RDIMM slots are available. Check the platform’s maximum supported memory per socket and any required population order for 2Rx4 registered modules to ensure the upgrade will be recognised at full speed.
| Brand | Dell |
|---|---|
| Capacity | 32GB |
| Type | 288-Pin DDR4 SDRAM |
| Speed | DDR4 2666 (PC4 21300) |
| CAS Latency | CL15 |
| Voltage | 1.20V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 2Rx4 |
| Chipset | Major Brand Chipset |
Yes, the module is built to the Dell TN78Y specification — 32GB, DDR4-2666, 2Rx4, CL15, 1.20V, ECC registered — so it matches the pin-out, voltage and timings that the original part provides.
Registered and unbuffered DIMMs cannot be mixed; the memory controller must support registered modules, so the server must already be designed for RDIMMs.
Check the BIOS memory information or a tool such as CPU-Z; it should report 2666 MT/s, CAS 15, 1.20V and ECC active for the new DIMM.
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