Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com
iMac (2007-2009) Memory Installation Video - YouTube
iMac (2009) RAM & Storage Upgrades
Timetec Hynix IC 32GB KIT(4x8GB) Compatible for Apple Late 2009 iMac 27inch DDR3 PC3-8500 1067MHz/1066MHz CL7 204 Pin 1.5V Dual Rank 2R8 Memory Module RAM Upgrade for iMac 11,1 (32GB KIT(4x8GB)) -
How to Improve Multitasking with an iMac Ram Upgrade?
How to Upgrade Memory in a Late 2009 21.5-inch or 27-inch iMac - YouTube
Shop Imac Late 2009 Ram Upgrade | UP TO 57% OFF
A-Tech for Apple 4GB Kit (2X 2GB) DDR3 1067MHz / 1066MHz PC3-8500 SODIMM Memory RAM
iMac 21.5" Late 2009 (10,1) - CPU Upgrade E8600 | MacRumors Forums
8GB Kit (2 x 4GB) PC3-8500 RAM for Apple iMac Late 2009 - 21.5 Inch BTO/
Memory Upgrades for Apple iMac 2009 - Up to 32GB
CMS 4GB (1X4GB) DDR3 8500 1066MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Apple® Imac Intel Core 2 Duo 20" 2009 - A34 - Walmart.com