Corsair 8GB (2x4GB) DDR3 1333 MHz (PC3 10666) Laptop Memory (CMSO8GX3M2A1333C9) (Personal Computers)
I got myself this memory to my iMac 24 "(July 2009) to upgrade from 4 to 8 GB. While the ancient memory running at 1066MHz, but the bars were adopted without any problems thanks to backward compatibility. I would recommend the store!
