OWC 128GB DDR4 3200 PC4-25600 CL22 4Rx4 288-pin 1.2V ECC Registered DIMM memory upgrade

Capacity and compatibility

This single module provides 128GB of DDR4 ECC registered memory built for the QNAP TS-h1290FX. It uses a 288-pin form factor and operates at 1.2V with a CL22 latency rating. The 4Rx4 organisation suits high-density server configurations. Workstations and standard desktops cannot use this registered design.

Sustained operation

ECC circuitry detects and corrects single-bit errors during continuous workloads, preserving data integrity over long uptimes. Registered buffering reduces electrical load on the memory controller when all slots are populated. JEDEC-standard 3200 MT/s signalling maintains stable throughput without relying on short-term boost behaviour. The module runs at the rated voltage without additional cooling requirements.

Deciding specification

The registered ECC design is the determining factor; it will not function in systems that require unbuffered non-ECC memory. Buyers whose platforms demand standard desktop DIMMs must select a different module type. Mixing this module with unbuffered memory is not supported and will prevent boot. Compatibility is confirmed only for the listed QNAP model.