Lenovo ThinkSystem SR680a V4 Rack Server - DDR5 6400MHz PC5-51200 - RDIMM

NEMIX RAM memory upgrades for the Lenovo ThinkSystem SR680a V4 Rack Server: DDR5-6400 ECC Registered (RDIMM) modules from 64GB to 128GB, sold as single modules and matched kits of up to 16, selected as drop-in, compatibility-tested replacements. 1.1V, 288-pin, JEDEC-compliant. This system runs two Intel Xeon 6 6700-series processors with P-cores, with 32 DDR5 DIMM slots (16 per processor, eight channels with two DIMMs per channel), supporting up to 4TB of memory with 128GB RDIMMs; Lenovo offers 64GB, 96GB and 128GB RDIMMs for this system. Lenovo rates the platform at DDR5-6400 with one DIMM per channel and DDR5-5200 with two DIMMs per channel. Lenovo positions the ThinkSystem SR680a V4 as an eight-GPU AI server for large-model training and inference. This platform takes registered ECC memory (RDIMM) only; unbuffered UDIMMs will not work. Use one module size and type throughout the server, and populate memory in the matched groups Lenovo specifies for each processor. Researched, matched, and compatibility-tested by NEMIX RAM, a US-based server memory specialist since 1993, and backed by a lifetime warranty. Volume, reseller, and B2B pricing available on request — contact our sales team for a quote.