Apple iMac 21.5" (1TB HDD, Intel Core i5, 2.70 GHz, 16GB) Desktop - Silver - ME086LL/A (2013) for sale online | eBay
27" iMac, Apple iMac (iMac11,3), Intel Core i5 2.80GHz Processor, 8GB RAM, 1TB HDD, DVD-RW, 2560x1440 Screen Resolution, Mac OS X 10.11.3 (El Capitan), No Keyboard/Mouse Or Power Cable, Screen Surround Top
Amazon.com: OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with iMac 21.5" and 27" (October/2009) : Everything Else
OWC 16.0GB (4 x 4GB) 1333MHz 204-Pin DDR3 SO-DIMM PC3-10600 CL9 Memory Compatible with iMac (OWC1333DDR3S16S) at Amazon.com
21.5” Apple iMac 11,2 Model A1311 Core i3 CPU. - shopgoodwill.com
Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
SOLVED: Upgrading CPU from i3 3.06 Ghz to i5/i7-S version 82W - iMac Intel 21.5" EMC 2389 - iFixit
Used A1311 Fan For Imac 21.5" A1311 Cpu Hdd Odd Fan Set (hard Disk Drive And Optical Drive) 2009 2010 2011 Year - Laptop Repair Components - AliExpress
Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide