iMac 27-inch Late 2009 – Full Tech Specs, Release Date, and Price
Apple iMac A1312 27" Late 2009 / Intel i5-750 @ 2.66GHz / 4GB RAM / ATI Radeon HD
Is it worth upgrading my ram on a Late 2009 iMac? New iMacs/MacBooks are very pricey. It's currently running on 4GB of RAM & it has a 3.06GHz Intel Core Duo Processor. :
Install memory in an iMac - Apple Support
Shop Imac Late 2009 Ram Upgrade | UP TO 58% OFF
Review: Apple's 27" big screen iMac (late 2009) | AppleInsider
Apple iMac 3.0Ghz Core 2 Duo 21.5-Inch (Late-2009) *No HDD/RAM* – MSU Surplus Store
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