NEMIX RAM 4GB (1X4GB) DDR3 1066MHZ PC3-8500 MacBook Pro (Late 2006 - Late 2008) Pre-unibody iMac (Early & Mid 2009) iMac (Late 2009) MacBook Pro (Late 2008 - 2010) Compatible Memory at Amazon.com
Apple iMac (21.5-inch, Late 2009) A1311 Late 2009, Core 2 Duo 3.06GHz 4GB Ram | eBay
iMac Memory for Models 10.1 and 11.1 | 16GB (4GBx4) | MacMemory.com
Apple iMac 2.6Ghz i5-750 27-Inch (Late-2009) *NO HDD/RAM* – MSU Surplus Store
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac | 2.26 GHz Core 2 Duo | 20 Inch | Mid 2009 - Techable.com
Apple iMac 27″ Late 2009 A1312 EMC 2374 Core2 Duo 3.06GHZ 1TB HDD 8GB RAM READ – eRecycler Online
Is it worth upgrading my ram on a Late 2009 iMac? New iMacs/MacBooks are very pricey. It's currently running on 4GB of RAM & it has a 3.06GHz Intel Core Duo Processor. :
16GB 4x 4GB Memory Ram For Apple iMac 21.5-in & 27-in Late 2009 - Walmart.com