Lenovo ThinkSystem 128GB 4Rx4 DDR4-2933 3DS RDIMM TruDDR4 Performance+ Memory

A single 128GB module is the point of the Lenovo ThinkSystem 4X77A12187. It is a 3DS RDIMM, where 3DS refers to three-dimensional stacking of memory chips, and it uses a 4Rx4 layout with ECC at 1.2V.

The transfer rate is 2933 MT/s. Stacking lets the module carry far more capacity than a standard RDIMM, which is why it appears in servers built for large in-memory databases, big virtualization hosts and similar RAM-hungry jobs.

This module belongs to Lenovo's TruDDR4 Performance+ line. Because 3DS modules are a distinct type, confirm that your ThinkSystem server supports them, and avoid mixing them with standard RDIMMs in the same channel unless the platform guide allows it.

It can be ordered refurbished, with 1 year or 3 years of warranty, or used, with a 90 day warranty. No new offer is listed. Request pricing, and include the server model.