CMS 32GB (4X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple®½ iMac 21.5" Intel Core I7 2.8Ghz (A1311) - C12 at Amazon.com
CMS 4GB (2X2GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 Ddr2 - A39 at Amazon.com
Amazon.com: Original Graphics Video Card Replacement for Apple iMac Core i3 3.2 Mid-2010 21.5 Inch Desktop Computer A1311 MC509LL/A MC509, AMD ATI Radeon HD 5670 GDDR3 512MB, GPU Board Repair Parts : Electronics
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
27" iMac Late 2009 A1312 Disassembly RAM SSD Hard Drive Upgrade LCD Screen Glass Replacement Repair - YouTube
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac Hard drive Storage Upgrade – Apple Mac Computer Repair Dallas , Laptop ,Desktop ,iMac ,MacBook iPhone iPad Data Recovery ,Virus