Lenovo 16GB DDR3-1333 RDIMM 49Y1563 | Server Memory, ECC, Registered

Keep aging IBM server platforms productive with a 16 GB DDR3-1333 registered ECC module designed for dependable in-service expansion. The 49Y1563 RDIMM uses a 2Rx4 layout, 1.35 V low-power operation, and PC3L-10600 signaling to support workloads that still depend on System x infrastructure. This module is a practical fit for environments where uptime matters more than chasing newer memory standards. Registered buffering helps maintain signal stability in server-class configurations, while ECC adds an additional layer of data integrity for business-critical applications. For teams extending the life of x3550 M3, x3630 M4, x3650 M3, or x3650 M4 systems, it offers a clean capacity increase without changing the platform. Because it is sourced for legacy IBM/Lenovo server compatibility, this part is suited to procurement cycles where exact-fit memory matters. It helps preserve performance consistency in virtualization hosts, file services, and application servers that still deliver value. When replacing smaller DIMMs or filling open slots, this 16 GB module provides a straightforward way to raise usable headroom while keeping the memory profile aligned with the server’s original design.