A-Tech for Apple 6GB Kit (1x2GB + 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
iMac 21.5" Late 2009 (10,1) - CPU Upgrade E8600 | MacRumors Forums
Install memory in an iMac - Apple Support
16GB Memory Upgrade Kit 2009 Apple Apple iMac
Review: Apple's 27" big screen iMac (late 2009) | AppleInsider
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
Early 2009 model iMac Computer, DDR3 8GB (2x4GB) RAM Replacement - YouTube
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
2009 iMac RAM & SSD upgrade in 2023 - YouTube
How to Upgrade Memory in a Late 2009 21.5-inch or 27-inch iMac - YouTube
8GB PC3-8500 RAM for Apple iMac Late 2009 - 27 Inch MB953LL/A Memory Upgrade Module
27" iMac Late 2009 A1312 Disassembly RAM SSD Hard Drive Upgrade LCD Screen Glass Replacement Repair - YouTube
8GB -2x4GB Memory Ram Upgrade 21.5" Apple iMac 10.1 3.06GHz Core2Duo Late 2009 | eBay
OWC Performance Upgrades for iMac 2010
27" iMac upgrade - ZD Laptop Service Centre
OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with iMac 21.5" and 27" (October/2009) at Amazon.com
Install memory in an iMac - Apple Support
Timetec 8GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 for Mac Book (Mid 2010 13-
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
Install memory in an iMac - Apple Support
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. :
Install memory in an iMac - Apple Support
How I kept my iMac running for a decade | Cult of Mac