OWC 16GB DDR4 2666 CL19 1.2V 288pin ECC Registered RDIMM Lenovo ThinkSystem SD530 SD650 SN550 SN850 SR530

Compatible Lenovo ThinkSystem models

This OWC 16GB DDR4 2666MHz CL19 1.2V 288-pin ECC Registered RDIMM is validated for Lenovo ThinkSystem servers SD530, SD650, SN550, SN850 and SR530 running Xeon SP Gen 1 processors. It replaces Lenovo part numbers 01AG618, 4X70P98202 and 7X77A01303. The module is built for server and workstation workloads that require error-correcting registered memory.

Verify registered ECC support and slot availability

Confirm the target system accepts 288-pin DDR4 ECC Registered DIMMs and that the memory controller supports registered modules; this memory will not work in platforms that only take unbuffered non-ECC DIMMs. The module is dual-rank 2Rx8 and operates at 1.2V, so ensure the server can populate the slot with a registered dual-rank stick. Do not mix this module with unbuffered memory in the same channel.

Upgrade from slower DDR4 or expand capacity

The stick is backward compatible with 2133MHz and 2400MHz DDR4 speeds, allowing it to replace slower registered ECC modules in the listed ThinkSystem servers. Adding this 16GB RDIMM increases total memory capacity for virtualization, database or compute tasks that benefit from ECC protection. The jump is worthwhile when the workload demands registered ECC reliability and the platform has free DIMM slots.