OWC 128GB DDR4 2933 PC4-23400 CL21 8Rx4 288-pin 1.2V ECC Load Reduced LRDIMM memory upgrade

Server DDR4 LRDIMM Upgrade

This 128GB OWC module is a DDR4 2933 PC4-23400 CL21 ECC Load Reduced DIMM built for server and workstation platforms. It uses a 288-pin form factor and operates at 1.2V with an 8Rx4 rank configuration. The part is validated for the PowerEdge C4140 with CascadeLake CPUs and is not compatible with standard desktop computers.

Capacity and Headroom

A single stick delivers 128GB of registered ECC memory, providing substantial headroom for virtualisation, large databases and memory-intensive compute tasks. The LRDIMM architecture reduces electrical load on the memory bus, allowing higher total system capacity than standard RDIMMs. Systems limited to lower-density modules or unbuffered memory cannot use this module.

Load Reduced ECC Requirement

The module requires a platform that supports DDR4 ECC Load Reduced technology; it cannot be mixed with unbuffered or standard registered ECC DIMMs. JEDEC and RoHS compliance ensures a warranty-safe upgrade. Backward compatibility covers 2133MHz, 2400MHz and 2666MHz bus speeds, but the controlling factor remains the LRDIMM memory controller.