Big Sur via Opencore on iMac Early 2009 on stock HDD and 4gb ram! Works amazing ! : r/BigSurPatcher
OWC 6GB (2GB + 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with Late 2008, Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, Mac Mini, 2009 iMac (OWC8566DDR3S6GP) at Amazon.com
iMac 20-inch (Early 2009) Core 2 Duo 2.66GHz - HDD 160 GB - 1GB | Back Market
Apple 24" iMac A1225 Early 2009 W/ C2D 2.66GHz/4GB RAM/640GB HDD/NVID – IT Warehouse Vancouver
Apple iMac 20-inch Early 2009 2.66GHz Intel Core 2 Duo (MB417LL/A) – UNICOM, Inc.
iMac (2009) RAM & Storage Upgrades
Installare la memoria in un iMac - Supporto Apple (IT)
how to upgrade iMac early 2009 SSD and RAM - full class - YouTube
PC Galore | iMac 24" Core 2 Duo @2.66GHz 4GB RAM 640GB HDD (Early 2009)
Install memory in an iMac - Apple Support
Apple MB417B/A iMac 21" (Early 2009) - Core 2 Duo 2.66GHz, 8GB RAM, 50
Apple iMac 20" intel® Dual-Core 2.66GHz Early 2009 (Ricondizionato) - FlashMac
Apple iMac 21.5-inch, Late 2009 - 3.06GHz Core 2 Duo Memory RAM Upgrades - Low Cost Delivery & Guaranteed Compatible | Mr Memory®
Apple iMac 24" early 2009 2,66 Ghz RAM 8 GB SSD 1 TB | eBay