8GB Kit (4GBX2) DDR3-1067Mhz for Early/Late 2009 iMac and 2009-2010 MacBook Pro at Amazon.com
iMac Upgrade Guide for Intel iMacs
Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 for Mac Book, Mac Book Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) SODIMM Memory MAC RAM Upgrade
Why iMac G4 is still the greatest Mac ever made 20 years later | Macworld
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
iMac | 3.06 GHz Core 2 Duo | 21.5 Inch | Late 2009 - Techable.com