Posted on November 16, 2009 by Jim Fitzsimmons

The latest Apple iMac models released in the Fall of 2009 require PC3-8500 DDR to run. The standard configuration for this iMac model is  4GB of RAM with a maximum 16GB allowed. This model iMac has no fixed memory in any of its 4 memory slots. As it ships from the factory, this iMac comes with 2GB of ram installed in two of the  4 memory slots available for upgrade. This leaves two memory upgrade slots available. To upgrade, you’ll need to install memory upgrades in kits, meaning 2 memory modules at a time. Most vendors market memory upgrades as memory upgrade ‘kits’.

Where to Buy Memory for Apple iMac 27 inch 2.66GZz Quad i5

Crucial Technology offers memory upgrades for pretty much every imaginable computer ever made, including the lastest iMacs. They offer both individual memory modules, and memory upgrade kits: 2GB memory modules are priced at $56.99. You’re better off buying the 4GB memory upgrade kit at $113.99 which includes 2×2gb memory modules. Others options are a 4GB memory module, but it’s pricey at$299, and the 8gb memory upgrade kit for this new iMac is priced at $599.99. The best value is the 4GB memory upgrade kits at $113.99

Edge Tech Corp has the same configuration as Crucial Technology: 2GB memory modules for the new iMacs are priced at $62.88 and a 4GB memory upgrade kit is priced at 125.88. 2GB memory upgrade kits are priced at $64.88, and 8GB iMac memory upgrades are priced at $644.88.

4allmemory differs in that fact that they only list memory modules individually, so you’ll have to remember to buy 2x each memory module. Their prices for memory upgrades for the Apple IMac 27 inch 2.66 Quad i5 are: 1GB memory is $49.99, 2GB is priced at $59.99 and 4GB modules are priced at $369.99