The SK hynix HMAG78EXNRA0xxN 16 GB 2R X 8 3200MHz DDR4 SDRAM RDIMM (Gen 4 Double Data Rate Synchronous Dynamic Random Access Memory Registered Dual In-line Memory Module), a low power, high-speed memory module that uses DDR4 SDRAM components.

RDIMMs include a Register Clock Driver for command/address signals between the DRAM and system memory controller.

Registered SDRAM DIMMs are intended for use as main memory when installed in systems such as servers, workstations, and networking equipment.