OWC 32GB (4x8GB) DDR3L 1600 CL11 ECC Registered RDIMM memory upgrade

Server memory kit for Cisco UCS

This OWC kit supplies 32 GB across four 8 GB DDR3L 1600 CL11 registered ECC DIMMs built for Cisco UCS B200 M3, B22 M3, B420 M3, C22 M3 and C220 M3 servers. The modules run at 1.35 V and carry the 2Rx4 organisation required by those platforms. They are not compatible with standard desktop or unbuffered memory slots.

Replaces Cisco UCSMR part numbers

The kit directly replaces Cisco part numbers UCSMR1X082RYA, UCSMR2X082RYB and UCSMR2X082RYE, letting administrators refresh or expand memory without sourcing OEM trays. The upgrade is worthwhile when the existing configuration leaves free DIMM slots or when lower-capacity modules limit virtual-machine density. Builders who need load-reduced DIMMs or consumer-grade memory cannot use this kit.

Steady throughput under ECC scrubbing

Registered buffering and on-die ECC keep data integrity intact during continuous workloads such as database caching or hypervisor page sharing. The 1.35 V DDR3L voltage reduces power draw compared with standard DDR3, helping thermal headroom in dense blade chassis. No heat spreader is fitted, so airflow across the DIMM rows must meet the server vendor’s specification.