2010 iMac 16 GB Ram upgrade.

iMac 3.06GHz Intel Core 2 Duo (21.5-inch – DDR3) Late 2009 16GB upgrade.

Go faster and further with a 2010 iMac memory upgrade from Crucial. We’ve got quality SODIMM memory for mobile systems. And because a memory upgrade is one of the easiest, most affordable ways to improve system performance, it’s the ideal solution for on-the-go users. If you count on your netbook or notebook, count on memory from Crucial. Crucial is a key brand in the Lexar Media family of products. So whether you’re focused on your family, friends, work or life outside of work-Crucial DRAM products help make computing more reliable, faster, and more effortless. With upgrades for nearly every PC and Mac system out there, plus flash products and Solid State Drives, you can be sure that if it’s important to you, it’s safe with us.

You can upgrade the 2010 iMac up to 16 GB of RAM with 4 of the 4 GB or RAM.  This iMac has 4 RAM slots see this image.

Watch this video to see how simple the installation for the RAM. This is the same for iMacs from 2008-2012.