16GB OWC DDR3 SO-DIMM PC3-8500 1066MHz CL7 Quad Channel Kit (4x 4GB) by OWC

OWC memory is specifically engineered for compatibility with your Mac. We start with the highest-quality components, and then create memory to the exacting speed, capacity, and programming specifications of nearly every upgradeable Apple computer. The result is JEDEC-compliant memory that’s a perfect fit for a faster Mac.

Compatible with:

• iMac (27-inch Late 2009) (October, 2009) Model ID: iMac10,1; iMac11,1 (2.66GHz, 2.8GHz, 3.06GHz, 3.33GHz)

• iMac (21.5-inch Late 2009) (October, 2009) Model ID: iMac10,1 (3.06GHz, 3.33GHz)

• PC Laptops: Compatible with Intel / AMD Process based PCs capable with the specifications listed above