Lenovo ThinkSystem 64GB DDR5 6400MT/s 2Rx4 RDIMM TruDDR5

For ThinkSystem V4 servers that need large memory totals, Lenovo 4X77A90966 offers 64GB per slot. Supported systems are the SC750 V4, SR630 V4, SR650 V4, SR650a V4, SR850 V4, SR860 V4 and SR680a V4, which covers two-socket and four-socket rack servers as well as GPU-focused models.

Specs in brief: TruDDR5 at 6400MT/s, registered, ECC, with a 2Rx4 rank layout on 16Gb DRAM. The x4 chip width is typical of higher-capacity server DIMMs. Feature code C0TQ identifies it in Lenovo configuration tools.

Typical buyers are running virtualization, large databases or analytics workloads, where memory per server decides how much can run on each host.

Keep every channel at the same capacity, speed and rank layout when mixing with existing memory. That keeps the configuration balanced across processors.

All three conditions are available. New and Refurbished modules carry 1 year or 3 years of warranty, and Used modules 90 days.