OWC 16GB DDR4 2400 CL17 ECC RDIMM 1Rx4 288-pin 1.2V for Cisco UCS B200 M4 C220 M4

Server-grade DDR4 ECC RDIMM

This OWC module delivers 16GB of DDR4 2400 registered ECC memory for Cisco UCS B200 M4 and C220 M4 servers. The 288-pin RDIMM operates at 1.2V with CL17 latency and a 1Rx4 organisation. It is built for workstation and server platforms that require registered error-correcting memory.

Capacity and registered bandwidth headroom

The single 16GB rank plugs directly into a compatible DDR4 slot to expand system memory without mixing with unbuffered or load-reduced modules. Registered buffering and ECC maintain data integrity under sustained multi-threaded workloads typical of virtualisation and database tasks. The PC4-19200 rating sets the maximum throughput ceiling for this module.

Replaces Cisco UCSMR1X161RVA and UCSMR1X161RVG

This part number serves as a direct replacement for the listed Cisco service parts when upgrading or servicing B200 M4 and C220 M4 chassis. The jump is worthwhile when existing DIMMs limit total capacity or when a failed module must be matched with identical registered ECC specifications. It will not work in standard desktop computers or systems requiring unbuffered memory.