OWC 16GB DDR4 2933MHz ECC Registered RDIMM 2Rx8 Dell PowerEdge R550 R640 R740 R740XD R740XD2 memory upgrade

16GB DDR4 ECC RDIMM for Dell PowerEdge servers

This 16GB registered DIMM targets Dell PowerEdge R550, R640, R740, R740XD and R740XD2 platforms that require ECC registered memory. It is not for standard desktop computers or any system that only accepts unbuffered modules. Builders needing consumer DDR4 should look elsewhere.

Capacity and headroom

The single 16GB module runs at 2933MHz with CL21 latency and 1.2V operation, providing registered ECC reliability for virtualisation, databases and multi-user workloads. Backward compatibility with 2133MHz, 2400MHz and 2666MHz bus speeds lets it slot into existing configurations, though maximum throughput stays at the rated PC4-23400 level.

Registered ECC 2Rx8 organisation

The 2Rx8 registered ECC design is the decisive specification; it must match the motherboard's memory controller requirements exactly. Mixing this module with unbuffered or non-ECC memory will prevent the system from posting, so verify the platform demands registered ECC RDIMMs before purchase.