How to Upgrade the RAM in Your iMac
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iMac RAM Upgrades Up to 128GB - OWC
Apple iMac "Core 2 Duo" 2.66 20-Inch (Early 2008) , 320 GB Hard Drive, 2 GB RAM - Imagine41
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
How to Upgrade the iMac 20-inch (Early 2009)
iMac (2009) RAM & Storage Upgrades
iMac Intel 20" EMC 2266 (Early 2009) Memory Maxxer RAM Upgrade Kit - iFixit Store
iMac Intel 24" EMC 2267 RAM Replacement - iFixit Repair Guide
iMac "Core 2 Duo" 2.26GHz 20-Inch (Mid-2009) - MacUpgrades.co.uk
iMac 21.5" Late 2009 (10,1) - CPU Upgrade E8600 | MacRumors Forums
iMac 20-Inch "Core 2 Duo" 2.26 (Mid-2009) Specs (Mid-2009 (Edu), MC015LL/B*, iMac9,1, A1224, 2316): EveryMac.com
Apple iMac A1225 20" Desktop - MB417LL/A (March, 2009) for sale online | eBay
iMac (2009) RAM & Storage Upgrades
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM (20" and 24" Aluminum): EveryMac.com
A-Tech for Apple 4GB Kit (2X 2GB) DDR3 1067MHz / 1066MHz PC3-8500 SODIMM iMac (Early/Mid/Late 2009, 20/24 inch, 21.5/27 inch), Mac Mini (Early/Late 2009 Mid 2010) Memory RAM Upgrade at Amazon.com
Install memory in an iMac - Apple Support
A-Tech for Apple 4GB Kit (2X 2GB) DDR3 1067MHz / 1066MHz PC3-8500 SODIMM iMac (Early/Mid/Late 2009, 20/24 inch, 21.5/27 inch), Mac Mini (Early/Late 2009 Mid 2010) Memory RAM Upgrade at Amazon.com
How do the "Early 2009" Aluminum iMac Core 2 Duo models compare to the " Early 2008/Penryn" models that preceded them?: EveryMac.com
Early 2009 model iMac Computer, DDR3 8GB (2x4GB) RAM Replacement - YouTube
Early-2009 iMac 24" for only $35! : r/mac
Memory Upgrades for iMac w/ Retina 5K Display Late 2015
