Computer Memory Solutions 16GB (2x8GB) DDR3 1333MHz SODIMM iMac 27" 2011 memory upgrade

Targeted iMac memory upgrade

This 16 GB kit contains two 8 GB DDR3 SO-DIMMs built for the 27-inch iMac released in mid 2011. It matches the factory 1333 MHz speed and 1.5 V voltage so the system recognises the modules without configuration changes. Buyers who need more than 16 GB or who own a different iMac generation should look elsewhere.

Two-module kit simplifies installation

The pair fills two of the four available slots, raising total memory from the standard 4 GB to 16 GB and leaving the remaining sockets open for future expansion. No heat spreaders are included, keeping the low-profile form factor required by the slim all-in-one chassis. The unbuffered, non-ECC design matches the original specification exactly.

DDR3 1333 sets the performance ceiling

The PC3-10600 interface caps bandwidth at the 1333 MHz data rate, so the machine cannot run faster memory even if faster modules are installed. CAS latency of CL9 and 2Rx8 organisation are fixed by the platform's memory controller. Systems limited to 32 GB maximum cannot address larger capacities regardless of module density.