OWC 4GB DDR3L 1866 PC3L-14900 CL13 1Rx8 204-pin 1.35V SODIMM memory upgrade Synology DiskStation DS625slim

OWC 4GB DDR3L SODIMM for DS625slim

This 4GB DDR3L module is built specifically for the Synology DiskStation DS625slim. It runs at 1866MHz with CL13 latency and a low 1.35V voltage. The 204-pin unbuffered SODIMM format fits the NAS memory slot directly. It is designed for owners who need to expand the memory in this specific DiskStation model.

Replaces Synology D3NS1866L-4G part

The module serves as a direct replacement for the Synology part number D3NS1866L-4G. It matches the OEM specifications for speed, voltage, and form factor. The upgrade is worthwhile when the NAS shows sluggish multitasking or struggles with concurrent file operations. Buyers whose DS625slim already runs the maximum supported memory will not benefit from adding this module.

Single 4GB rank for light workloads

The 1Rx8 organisation provides a single 4GB rank of non-ECC memory. This capacity handles basic file serving, backup tasks, and light application hosting comfortably. It runs out quickly when running multiple virtual machines, heavy Docker containers, or large database workloads. Users planning intensive virtualisation should verify the maximum memory limit of the DS625slim before purchasing.