NEMIX RAM DDR5 4800 384GB 6x64GB ECC RDIMM Supermicro H13DSG-O-CPU-D memory upgrade

Capacity and form factor

This is a 384GB kit of six 64GB DDR5 registered ECC RDIMMs built for the Supermicro H13DSG-O-CPU-D motherboard. Each module uses a 288-pin layout and 2Rx4 organisation so the memory controller sees the exact rank structure it expects. The kit is designed for servers that require registered memory to run fully populated at rated speed.

DDR5 registered ECC limits

Registered DIMMs buffer the command and address bus, allowing all slots to be filled without overloading the memory controller, while ECC corrects single-bit errors on the fly. The modules operate at 1.1V with a CL40 latency at the DDR5-4800 data rate. Systems that require unbuffered UDIMMs or SODIMMs cannot use this kit, and boards with stricter population rules may not support a full six-module installation.

Speed grade and rank

The decisive specification is the DDR5-4800 (PC5-38400) speed grade combined with 2Rx4 registered ECC organisation at 1.1V. If your platform demands a different data rate, voltage, rank configuration or unbuffered modules, this kit will not be recognised or will run at a reduced speed. Verify the motherboard's qualified vendor list before purchase.