Lenovo ThinkSystem 64GB 2Rx4 DDR5-4800 RDIMM TruDDR5 Memory

This 64GB DDR5 module, part number 4X77A81441, is aimed at AMD-based ThinkSystem V3 servers; it is listed for the SR645 V3 and SR635 V3. It is a TruDDR5 RDIMM with ECC and a 4800 MT/s data rate.

The 2Rx4 layout, two ranks of x4 chips, is the usual way to build a 64GB registered DIMM. Large modules matter to virtualization and database hosts, where the amount of memory per socket often sets how many workloads you can place on one server.

Typical orders are for new server builds or capacity upgrades. Because DDR5 platforms have their own population rules, plan the module count per channel from the server's documentation, and keep modules identical where you can.

The module is offered new and refurbished with a choice of 1 year or 3 years of warranty, and used with 90 days. Request pricing for 4X77A81441 and say how many slots you plan to fill.