Samsung 128GB DDR5-5600 ECC RDIMM (2Rx4, 32Gb)

The Samsung M321RAJA0MB0-CWM is a 128 GB DDR5-5600 ECC registered DIMM built on Samsung 32 Gb DDR5 DRAM in a dual-rank x4 configuration. Earlier 128 GB DDR5 modules relied on 3DS-stacked quad-rank packages and were limited to 4800 MT/s; the 32 Gb die generation lets Samsung reach the same capacity as a plain 2Rx4 module at 5600 MT/s, with CL46 timing at 1.1 V and lower electrical loading on the channel.

This is the module for in-memory databases, large virtualisation hosts and AI inference servers where memory per socket matters more than module count. Twelve modules give an EPYC 9005 socket 1.5 TB; eight give a 5th Gen Xeon Scalable socket 1 TB at one DIMM per channel. Enterprises migrating from DDR4 platforms with 128 GB LRDIMMs will find that DDR5 drops the load-reducing buffer entirely, so the 128 GB RDIMM is the direct successor. Note that 32 Gb-based modules need recent BIOS releases, that Samsung also ships OEM-suffixed versions (CWMCJ, CWMHY), and that a server should be populated with identical capacity and die type across all channels to stay within the OEM qualified list.

High-capacity server DRAM is supplied via InTechnologies' licensed partners, who issue the contract and invoice. InTechnologies sources from authorised distribution and verified channel stock, consolidates the shipment in Dubai Airport Freezone and delivers DDP or DDU, with end-user details recorded for each order.