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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A-Tech
16 GB DDR5 4800 ECC registered DIMM with 1Rx8 organisation and CL40 latency for server workloads
This 16GB A-Tech module is a registered DDR5 DIMM built with error-correcting code for server and workstation platforms. It operates at 4800 MT/s with CL40 latency at the standard 1.10V. The single-rank 1Rx8 organisation uses major-brand chips and matches the Samsung M321R2GA3BB6-CQK part number.
This module suits administrators upgrading or repairing systems that require registered ECC DDR5 memory in a 288-pin form factor. It is not for desktop boards that accept only unbuffered non-ECC DIMMs. Buyers who need higher capacities per slot or different latency bins should verify their platform's qualified-vendor list before ordering.
The registered ECC design is the single specification that determines compatibility; the memory controller must support registered DDR5 DIMMs with on-die ECC for this module to function.
| Brand | A-Tech |
|---|---|
| Capacity | 16GB |
| Speed | DDR5 4800 (PC5 38400) |
| CAS Latency | CL40 |
| Voltage | 1.10V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 1Rx8 |
| Chipset | Major Brand Chipset |
| Features | Major Brand Chips |
The module is a standard registered DDR5 DIMM with no firmware; once seated in a 288-pin slot it requires no further maintenance beyond normal system cleaning.
The CL40 latency at 1.10 V sets the timing boundary; sustained throughput is capped by the DDR5 4800 (PC5-38400) data rate.
At the DDR5 standard 1.10 V the module draws minimal power and generates low heat; registered buffering adds negligible thermal load in a server chassis.
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