Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
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Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
iMac 21,5 2009-2011 LGA 1156 with i7, works good!! | MacRumors Forums
Upgrade iMac Intel Core i3 CPU to Core i7 - iFixit Repair Guide
Apple iMac 21.5" (1TB HDD, Intel Core i5, 2.70 GHz, 16GB) Desktop - Silver - ME086LL/A (2013) for sale online | eBay
OWC 16.0GB (4 x 4GB) 1333MHz 204-Pin DDR3 SO-DIMM PC3-10600 CL9 Memory Compatible with iMac (OWC1333DDR3S16S) at Amazon.com