OWC 4GB DDR3 1600 CL11 1Rx8 204-pin 1.5V SODIMM ThinkPad L530 T430 T430i T430s T430si T431s T530

4GB DDR3 1600 SODIMM for ThinkPad L530 T430 series

This 4GB DDR3 1600 CL11 SODIMM is built for Lenovo ThinkPad L530, T430, T430i, T430s, T430si, T431s and T530 laptops. It uses a 204-pin unbuffered non-ECC layout at 1.5V. The module adds memory capacity to supported systems without requiring configuration changes. Buyers needing ECC or registered memory cannot use this module.

Sustained load behaviour

The JEDEC-standard PC3-12800 rating means the module runs at its rated 1600 speed under continuous workloads. CL11 latency stays consistent during extended sessions such as large file editing or multi-tab browsing. The single-rank 1Rx8 organisation helps the memory controller keep timing stable. Systems that demand higher frequencies or lower latencies will not reach those targets with this part.

Build and connectors

The stick follows the standard 204-pin SODIMM form factor with no heat spreader, so it fits the tight SO-DIMM slots in the listed ThinkPad models. Gold-edge contacts resist oxidation through repeated insertions. JEDEC and RoHS compliance ensures the module meets industry electrical and environmental rules. Laptops that require 1.35V low-voltage modules are not compatible with this 1.5V design.