parts-quick 6GB Kit (4GB + 2GB) Memory for iMac 2008 Apple MacBook 2009 PC2-6400 800MHz DDR2 SODIMM at Amazon.com
4GB Kit (2GBX2) DDR2 800MHz RAM Memory Upgrade for Apple iMac Core 2 Duo 20-inch (Early 2008) (PARTS-QUICK) - Walmart.com
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8GB (4GBx2) Team High Performance Memory RAM Upgrade for iMac “Core 2 Duo” 2.66 20-Inch (Early 2008) MB324LL/A iMac 8,1. The Memory Kit Comes with Life Time Warranty. at Amazon.com
CMS 2GB (1X2GB) RAM Memory 4 Apple iMac "Core 2 Duo" 2.4 20-Inch Early 2008 - Walmart.com
iMac (Early 2008) RAM Upgrade - YouTube
Maximum RAM iMac early 2008 | MacRumors Forums
iMac (24-Inch Early 2008) - original packaging, 4GB upgraded RAM, fresh OS X - computers - by owner - electronics sale...
Maximum RAM iMac early 2008 | MacRumors Forums
Memory Upgrades for Apple iMac 2008 - Up to 6GB
Good Condition Apple iMac Early 2008, 250GB Storage, 5GB RAM, 2.4GHz | eBay
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