![CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 - A42 at Amazon.com CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 - A42 at Amazon.com](https://m.media-amazon.com/images/I/61EHK0f0d5L._AC_UF894,1000_QL80_.jpg)
CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 - A42 at Amazon.com
![Timetec Hynix IC 4GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 SODIMM Memory RAM Upgrade for Late 2008, Early/Mid/Late 2009, Mid 2010 MacBook, MacBook Pro, iMac, Mac Mini (4GB) - Walmart.com Timetec Hynix IC 4GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 SODIMM Memory RAM Upgrade for Late 2008, Early/Mid/Late 2009, Mid 2010 MacBook, MacBook Pro, iMac, Mac Mini (4GB) - Walmart.com](https://i5.walmartimages.com/asr/af100675-60d6-4ffe-9fdf-6ffbb6dc4a76_1.b084f65e2b9332f0868ee251f2939d53.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
Timetec Hynix IC 4GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 SODIMM Memory RAM Upgrade for Late 2008, Early/Mid/Late 2009, Mid 2010 MacBook, MacBook Pro, iMac, Mac Mini (4GB) - Walmart.com
![Amazon.com: OWC 4GB PC5300 DDR2 667MHz SO-DIMM Memory Compatible with MacBook (Late 2007/Early 2008), MacBook Pro (Mid/Late 2007, Early 2008), & iMac (Late 2007) Systems with Core 2 Duo Processor : Everything Else Amazon.com: OWC 4GB PC5300 DDR2 667MHz SO-DIMM Memory Compatible with MacBook (Late 2007/Early 2008), MacBook Pro (Mid/Late 2007, Early 2008), & iMac (Late 2007) Systems with Core 2 Duo Processor : Everything Else](https://m.media-amazon.com/images/I/81CWloCumMS.jpg)