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

128GB ECC Registered DIMM for Fujitsu servers

This 128GB DDR4 3200 module is an ECC registered DIMM built for Fujitsu PRIMERGY CX400 M7, TX2550 M5, CX2570 M4, RX2530 M4 and RX2540 M4 systems. It targets administrators who need high-density registered memory for virtualization, database or compute workloads. The single-module design simplifies capacity scaling in qualified platforms.

Verify registered ECC support and rank limits

Before ordering, confirm your system accepts 4Rx4 registered ECC DDR4 at 1.2V and that the memory controller supports the required rank-per-channel limit. This module cannot be mixed with unbuffered or load-reduced DIMMs, and standard desktop platforms will not recognise it. Check the vendor memory-qualified list for exact population rules.

Passive cooling with standard voltage

The module operates at 1.2V without a heat spreader, relying on chassis airflow for thermal management. Under normal server loads it runs within JEDEC thermal limits and adds minimal acoustic contribution. Power draw scales with capacity and rank count, so ensure the power budget accounts for the full 128GB configuration.