OWC 128GB DDR4 2933MHz CL21 ECC Registered 288pin DIMM memory upgrade

128GB DDR4 ECC Registered DIMM

This 128GB DDR4 2933MHz CL21 ECC Registered 288-pin DIMM is built for Supermicro X11 server and workstation boards including X11DSN-TS, X11OPi-CPU, X11QPH+, X11QPL and X11SPA-T. It operates at 1.2V with a 4Rx4 organisation and replaces Supermicro part numbers MEMDR412LSL01ER29 and MEM-DR412MH-ER29. Buyers upgrading standard desktop systems or needing unbuffered memory cannot use this module.

Thermals and power profile

The module runs at the standard DDR4 1.2V without a heat spreader, relying on chassis airflow for cooling in 1U or 2U server enclosures. Registered buffering and ECC logic add minimal overhead, keeping power draw predictable for dense multi-DIMM configurations. No active cooling or additional voltage headroom is required for rated 2933MHz operation.

Compatibility and upgrade impact

Backward compatibility with 2133MHz, 2400MHz and 2666MHz buses lets the DIMM slot into existing Supermicro platforms without BIOS updates. ECC registered operation enables error correction and signal integrity for mission-critical workloads, while the 4Rx4 density maximises capacity per slot. The module is JEDEC and RoHS compliant and cannot be mixed with unbuffered memory in the same system.