Other World Computing has launched 16GB RAM upgrade options for the 2011 iMac line released earlier this week. The RAM upgrades are PC3-10600 DDR3 1333MHz rated, and available at substantial discounts compared to Apple's offerings. A 8GB kit with 2x4GB is $105, just less than half the price at Apple, and a full 16GB kit -- 4x4GB -- is $210, a 65 percent savings over Apple's $600.