OWC 16GB DDR3L 1600MHz CL11 SO-DIMM 1.35V memory upgrade

16GB DDR3L SO-DIMM for 2015 iMac 27

This 16GB DDR3L module runs at 1600MHz with CL11 latency and operates at 1.35V. It uses the 204-pin SO-DIMM form factor and is unbuffered, non-ECC memory. The kit is designed as a direct upgrade for Late 2015 iMac 27-inch Retina 5K models and compatible PCs, laptops, mini PCs, and NAS systems. It meets JEDEC standard specifications and is ROHS compliant.

Low-voltage operation and thermal profile

The DDR3L designation means the module runs at 1.35V instead of the standard 1.5V, reducing power draw and heat output during normal use. Lower voltage operation helps maintain cooler temperatures inside compact chassis such as all-in-one desktops or small form factor systems. No active cooling is required on the module itself, keeping acoustic noise at zero. The CL11 timing at 1600MHz delivers stable performance within the platform's supported memory controller limits.

204-pin SO-DIMM build and compatibility

The module uses a standard 204-pin SO-DIMM edge connector with unbuffered architecture, ensuring straightforward installation in accessible memory slots. Gold-plated contacts resist oxidation for long-term reliability in portable and stationary devices alike. The PCB is built to JEDEC dimensional standards so it fits the tight clearances of the 2015 iMac 27-inch Retina 5K and similar compact PCs. Buyers needing ECC error correction or registered buffering for server-grade workloads should look elsewhere, as this module provides neither.