OWC 16GB (2x8GB) DDR3L 1600 CL11 ECC Registered RDIMM X9QRi X9SRD

Server-grade DDR3L kit

This 16GB kit contains two 8GB DDR3L 1600 registered ECC modules built for Supermicro X9QRi and X9SRD motherboards. Each stick runs at 1.35V with CL11 latency and a 1Rx4 organisation. The registered buffer and ECC logic make it suitable only for workstation or server platforms that explicitly support registered memory. It will not function in standard desktop boards or alongside unbuffered modules.

Sustained workload behaviour

ECC circuitry detects and corrects single-bit errors on the fly, preventing silent data corruption during long compute runs or continuous file-serving duties. Registered signalling reduces electrical load on the memory controller, helping stability when all slots are populated in multi-socket configurations. The low 1.35V operating voltage limits heat output, so thermal throttling is unlikely even under prolonged maximum bandwidth demand.

Physical build and daily implications

Modules ship without heat spreaders, keeping the profile low enough for dense server chassis where vertical clearance is tight. Gold-plated 240-pin edges resist oxidation in environments that see infrequent reseating. Because the kit replaces specific Supermicro part numbers, installers can match the original population order without guessing rank or voltage compatibility. OWC tests every unit in-house before it leaves the factory.