NEMIX RAM 128GB DDR5 6400MHz CL52 2Rx4 1.1V ECC Registered RDIMM memory upgrade

128GB DDR5-6400 ECC RDIMM for Supermicro H13SST-G

This 128GB DDR5 6400MHz CL52 2Rx4 1.1V ECC Registered RDIMM is built for servers that require registered memory with error correction. It matches the exact rank, voltage and timing the Supermicro H13SST-G motherboard expects so the system recognises the full capacity at rated speed. The module uses major OEM chips from Samsung, Micron or Hynix and carries no heat spreader. It is intended for administrators upgrading compatible Supermicro platforms with validated memory.

Installation and common issues

The kit is a single 288-pin RDIMM that installs like any registered DIMM; align the key notch with the slot and press until the latches click. Because this is registered ECC memory it must go into a board that supports RDIMM population rules — UDIMM or SODIMM slots will not accept it. A frequent problem is ignoring the motherboard's required population order, which can prevent the system from posting or limit usable capacity. Always follow the manual's slot sequence when adding or replacing modules.

Pre-order checklist

Confirm that your Supermicro H13SST-G motherboard lists 128GB DDR5-6400 2Rx4 Registered ECC at 1.1V with CL52 timing in its qualified vendor list. Verify the maximum supported capacity per slot and the approved DIMM population order for your specific BIOS revision. Ensure the server chassis has clearance for standard-height RDIMMs and that the power budget accounts for the additional memory. If the manual specifies a different rank, voltage or speed, this module will not be compatible.