NEMIX RAM DDR5 256GB (2x128GB) 6400MHz CL52 1.1V 2Rx4 ECC RDIMM for Supermicro SYS-122HA-TN-LCC

Supermicro SYS-122HA-TN-LCC DDR5 RDIMM Kit

This 256GB kit supplies two 128GB DDR5 registered DIMMs built for the Supermicro SYS-122HA-TN-LCC server. Each module runs at 6400MHz with a CL52 latency and operates at 1.1V. The 2Rx4 organisation and ECC support target enterprise workloads that demand data integrity and high capacity per slot.

Upgrade Path From Lower-Capacity Registered DDR5

The kit replaces smaller RDIMM sets or mixed-capacity configurations that limit total memory on this platform. Moving to 2x128GB is worth it when applications need the full 256GB in a two-slot footprint and can benefit from the 6400MHz transfer rate. Systems already populated with slower registered DDR5 will not see a latency improvement because CL52 is fixed at this speed grade.

DDR5 RDIMM Electrical And Mechanical Limits

The 288-pin DDR5 RDIMM interface defines the key notch position, pin count and 1.1V signalling that this kit follows. Registered buffering adds a clock cycle of command latency, which is standard for server memory but prevents use in unbuffered desktop boards. The 2Rx4 rank structure fits the platform’s memory controller limits; exceeding the supported rank count per channel would prevent the system from posting.