OWC 16GB DDR4 2933 CL21 2Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade

Server ECC RDIMM upgrade

This 16GB DDR4 2933 ECC registered RDIMM is built for the Dell PowerEdge C4140 with Cascade Lake CPUs. It targets administrators extending the life of existing server infrastructure or building cost-effective replacements. The module follows JEDEC PC4-23400 timing at 1.2V and carries a 2Rx4 organisation. It will not work in standard desktop PCs, consumer NAS boxes, or any platform that requires unbuffered or load-reduced DIMMs.

Tool-free DIMM installation

Installation follows normal server DIMM procedure: power down, open the chassis, align the 288-pin key and press until the ejector tabs click. No heat spreader means the module sits low under standard air baffles. The most common error is mixing this registered ECC stick with unbuffered or load-reduced memory, which prevents the system from posting. Verify every slot uses identical registered ECC parts before closing the case.

16GB capacity headroom

A single 16GB rank pair handles typical virtualisation hosts, database buffers and multi-tenant workloads on the C4140. The module also runs at 2133, 2400 and 2666 MT/s if the CPU or BIOS caps memory speed. Capacity runs out when workloads demand more than the board's maximum DIMM count allows or when applications exceed per-channel bandwidth at lower speeds. Buyers needing larger per-DIMM densities or load-reduced ECC must choose a different module.