Computer Memory Solutions CM10246410600SODRH 16GB DDR3 1333 SODIMM memory upgrade

16GB DDR3 SODIMM kit for 27-inch iMac

This 16GB kit consists of two 8GB DDR3 1333 SO-DIMM modules built to 204-pin form factor. It targets owners of the Apple iMac 27-inch 2.7GHz Intel Core i5 (MC813LL/A) who need the full 16GB Apple officially supports. The unbuffered, non-ECC design matches the original specification for these all-in-one desktops.

Straightforward user installation

The modules slot directly into the SO-DIMM bay behind the memory compartment door on the rear of the iMac. No configuration is required; the system recognises the memory at 1333MHz CL9 automatically. The only common issue is inserting a module at an angle so the notch does not engage — press firmly until the side clips click.

Comfortable at 16GB; headroom to 32GB if

Apple rates this model at 16GB maximum across its four sockets, and this kit fills two of them with 8GB sticks. The supplier notes the actual hardware limit may reach 32GB, but that depends on firmware behaviour not guaranteed by Apple. For workloads beyond 16GB, buyers should verify real-world reports for their exact model before adding a second kit.