Catalina 10.15.3 running decent on my mid 2009 iMac. Gonna max out the RAM to 8GB. 🤗 : r/CatalinaPatcher
Vintage: Apple iMac 20-inch 2.26GHz Core 2 Duo (Mid 2009) 4GB RAM 160GB HDD | eBay
Understanding RAM Speed Differences and Upgrades - Mac Optimization Software Reviews
iMac (27-inch, 3.06GHz Intel Core 2 Duo, Late 2009) | iGotOffer
How to Upgrade Memory in a Late 2009 21.5-inch or 27-inch iMac - YouTube
iMac Intel 27" Late 2009 EMC 2309 - used original spareparts for Macs
iMac "Core 2 Duo" 3.06 21.5" (Late 2009) Specs (Late 2009, MB950LL/A*, iMac10,1, A1311, 2308): EveryMac.com
iMac (Early 2009) | Low End Mac
A-Tech 16GB (2 x 8GB) PC3-8500 DDR3 1066/1067 MHz RAM for MacBook (Mid 2010 13 inch), MacBook Pro (Mid 2010 13 inch), iMac (Late 2009 27 inch i5/i7), Mac Mini (Mid 2010)
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz SODIMM PC3-12800 204-Pin SO-DIMM Max Memory Upgrade at Amazon.com
Late 2009 iMac RAM Upgrade - iMac (Late 2009) Memory Upgrade
Install memory in an iMac - Apple Support (PH)
Memory Upgrades for Apple iMac 2009 - Up to 32GB
iMac 21.5-inch (Late 2009) Core 2 Duo 3.06GHz - HDD 1 TB - 4GB | Back Market
Max RAM for my iMac 27" (late 2009) | MacRumors Forums
iMac Intel 27" EMC 2309 and 2374 RAM Replacement - iFixit Repair Guide
ram for late 2009 imac model | Newegg.com
iMac Intel 21,5" Late 2009 EMC 2308 - used original spareparts for Macs
Apple iMac (27-inch, Late 2009) Serial Number Lookup - AppleSN.info
Apple iMac "Core i5" 2.66 27-Inch (Late 2009) Quad Core - Imagine41
Can the Late 2009 27" iMac handle 32GB of RAM? | MacRumors Forums
Sold - 27" iMac Late 2009 // $295 - Boulder Mac Repair
