NEMIX RAM 256GB (2x128GB) DDR5-6400 ECC RDIMM CL52 1.1V Kit for ASRock Rack GNR2D16-2T

256GB DDR5-6400 ECC RDIMM kit

This 256GB kit contains two 128GB DDR5-6400 registered ECC RDIMMs built for the ASRock Rack GNR2D16-2T motherboard. Each module runs at 1.10V with CL52 latency and a 2Rx4 rank layout. The 288-pin registered design matches the board's memory controller requirements exactly. It is intended for administrators who need maximum supported capacity in a validated configuration.

Sustained load stability

Registered buffering reduces electrical load on the memory controller so all slots can run fully populated at the rated 6400MT/s speed without throttling. On-die ECC corrects single-bit errors in real time, preventing silent data corruption during long compute runs. The 1.10V operating voltage keeps power draw predictable under continuous utilisation. This combination maintains throughput and data integrity in multi-hour workloads.

Upgrade path and fitment check

The kit replaces lower-capacity RDIMMs or fills empty slots to reach the platform's 256GB limit in a two-module population. The jump is worthwhile when your workload exceeds current memory headroom or when ECC protection becomes a requirement. Verify the motherboard manual for approved DIMM population order and maximum capacity per slot before installation. It is not suitable for systems that accept only unbuffered UDIMMs or SODIMM form factors.