Apple iMac (27-inch, unibody, 2009) review: Apple iMac (27-inch, unibody, 2009) - CNET
Apple iMac Core i5 i7 27" Late 2009 Logic Board MB953LL/A A1312 820-27 - Part Haven
SOLVED: Can a 2009 core 2 duo logic board be replaced with a 2010 i3 board? - iMac Intel 21.5" EMC 2308 - iFixit
Core Duo/Core 2 Duo MacBook CPU Upgrading | MacRumors Forums
Someone gave me this unwanted Mac, anyone know if you can upgrade the graphics cards on these ? Keep seeing conflicting information it's a 24" early 2009 imac : r/mac
Apple iMac 20-inch Educational July 2009 2GHz Intel Core 2 Duo (MC015LL/A) | eBay
2009 Mac Pro CPU Replacement (quad-core) - iFixit Repair Guide
Apple iMac (27-inch, unibody, 2009) review: Apple iMac (27-inch, unibody, 2009) - CNET
2010 iMac CPU Upgrade - The whole process - YouTube
8GB Kit (4GBx2) Upgrade for a Apple iMac 2.66GHz Intel Core 2 Duo (20-inch - DDR3) MB417LL/A System (DDR3 PC3-8500, Non-ECC, ) at Amazon.com
Upgrade GPU and CPU for a late-2009 Imac | MacRumors Forums
Upgrade Core 2 Duo 3.06 GHz to a newer I Series CPU? - iMac Intel 27" EMC 2309 and 2374 - iFixit
iMac | 3.33 GHz Core 2 Duo | 27 Inch | Late 2009 - Techable.com