OWC 128GB DDR4 2666 PC4-21300 CL19 8Rx4 288-pin 1.2V ECC RDIMM ThinkAgile Xeon SP Gen 1

Server-specific memory upgrade

This is a single 128GB DDR4 2666 PC4-21300 CL19 8Rx4 288-pin 1.2V ECC Registered RDIMM module from OWC. It is built for Lenovo ThinkAgile systems running Xeon SP Gen 1 processors including the HX3520-G, HX3521-G, VX 2U, VX 2U4N and VX5520. The module meets JEDEC and RoHS standards and is tested for warranty-safe installation. It will not fit standard desktop computers.

Suited for capacity expansion in compatible

This module suits administrators adding high-density memory to the listed ThinkAgile platforms where registered ECC DDR4 is required. It is not for desktop PCs, workstations that accept only unbuffered DIMMs, or systems that require load-reduced memory. Mixing with unbuffered or load-reduced modules is not supported. Buyers needing non-ECC or consumer-form-factor memory should look elsewhere.

Steady throughput under sustained server workloads

The registered buffer and ECC circuitry maintain data integrity during continuous operation across all ranks. Rated at 2666MHz with CL19 latency and 1.2V, the module also runs at 2133MHz and 2400MHz where the platform dictates. This behaviour supports long-running virtualisation, database and compute tasks without the error accumulation seen in non-ECC alternatives.