SK hynix HMA84GR7AFR4N-UH 32GB DDR4 2400 ECC REG DIMM 2Rx4

Capacity and rank

This module delivers 32 GB of DDR4 memory in a dual-rank 2Rx4 layout. The density suits virtualisation hosts and database nodes that need large addressable space per DIMM slot. Workloads that exceed the per-module capacity will require additional populated slots.

Speed and voltage

Rated at DDR4 2400 (PC4 19200), the stick runs at 1.20 V standard voltage. Throughput is adequate for mainstream server tasks but becomes a bottleneck in memory-bound HPC or high-frequency trading workloads. Latency scales with the rated frequency and cannot be improved without platform overclocking support.

Registered ECC integration

The registered buffer and on-die ECC reduce electrical load on the memory controller and correct single-bit errors. A compatible server board with registered DIMM support is mandatory; unbuffered consumer platforms will not accept this module. The 288-pin form factor fits standard DDR4 DIMM slots in qualified Supermicro and other vendor systems.