OWC 128GB DDR4 2933MHz CL21 ECC Registered 288pin DIMM for Lenovo ThinkSystem SR650 SR950

Server-grade capacity for ThinkSystem SR650

This 128GB DDR4 2933MHz CL21 ECC Registered DIMM is built for Lenovo ThinkSystem servers running Xeon SP Gen 2 processors. The 288-pin module delivers 128GB in a single slot using a 4Rx4 organisation, allowing dense memory configurations in the SR650 and SR950 platforms. It operates at the standard 1.2V and meets JEDEC PC4-23400 specifications for registered server memory.

Steady throughput under continuous server workloads

Registered buffering and on-die ECC keep data integrity intact during sustained compute tasks such as virtualisation, database processing and large-scale analytics. The module runs at its rated 2933MHz speed and will also operate at 2133MHz, 2400MHz or 2666MHz when the platform requires a lower frequency, maintaining stability without down-clocking errors. CL21 latency supports consistent response times across all ranks during extended operation.

Low-voltage operation reduces thermal load

At 1.2V the DIMM draws minimal power, helping the server's cooling system maintain lower temperatures even when all memory slots are populated. The absence of a heat spreader keeps the module profile slim for unrestricted airflow between adjacent DIMMs. Quiet, reliable operation is maintained in both the SR650 and SR950 chassis under normal production loads.