![iMac "Core 2 Duo" 3.33 21.5" (Late 2009) Specs (Late 2009, BTO/CTO, iMac10,1, A1311, 2308): EveryMac.com iMac "Core 2 Duo" 3.33 21.5" (Late 2009) Specs (Late 2009, BTO/CTO, iMac10,1, A1311, 2308): EveryMac.com](https://everymac.com/images/cpu_pictures/apple-imac-al-21-late-2009.jpg)
iMac "Core 2 Duo" 3.33 21.5" (Late 2009) Specs (Late 2009, BTO/CTO, iMac10,1, A1311, 2308): EveryMac.com
![OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with iMac 21.5" and 27" (October/2009) at Amazon.com OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with iMac 21.5" and 27" (October/2009) at Amazon.com](https://m.media-amazon.com/images/I/91y0KobrkmS.jpg)
OWC 16GB (4 x 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with iMac 21.5" and 27" (October/2009) at Amazon.com
![2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider 2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider](https://photos5.appleinsider.com/gallery/21640-25066-21622-24977-IG1JLCr6OejKtfEx-l-l.jpg)
2017 21.5-inch 4K iMac memory upgrade kit includes 32GB of RAM, tools to take it apart | AppleInsider
![16GB (4GBx4) Team High Performance Memory RAM Upgrade For iMac “Core 2 Duo” 3.06 21.5-Inch (Late 2009) MB950LL/A iMac 10,1 1. The Memory Kit comes with Life Time Warranty. at Amazon.com 16GB (4GBx4) Team High Performance Memory RAM Upgrade For iMac “Core 2 Duo” 3.06 21.5-Inch (Late 2009) MB950LL/A iMac 10,1 1. The Memory Kit comes with Life Time Warranty. at Amazon.com](https://m.media-amazon.com/images/I/816SnOP+ZIL._AC_UF894,1000_QL80_.jpg)
16GB (4GBx4) Team High Performance Memory RAM Upgrade For iMac “Core 2 Duo” 3.06 21.5-Inch (Late 2009) MB950LL/A iMac 10,1 1. The Memory Kit comes with Life Time Warranty. at Amazon.com
![Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com](https://m.media-amazon.com/images/I/81V2lyp-6ZL._AC_UF894,1000_QL80_.jpg)
Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com
![Apple iMac 21.5" All-in-Computer, Intel Core i5, 8GB RAM, 500GB HD, macOS, Silver, MC309LL/A (Used) - Walmart.com Apple iMac 21.5" All-in-Computer, Intel Core i5, 8GB RAM, 500GB HD, macOS, Silver, MC309LL/A (Used) - Walmart.com](https://i5.walmartimages.com/asr/c46e22dc-65d8-4b20-8948-b6dc3353cfc1.eed65d89c783b11f2bc2f0a94430caad.jpeg)