2011 model MacBook Pro and Mac minis can now be outfitted with up to 16GB of RAM -- doubling the maximum factory option -- with the introduction of DDR3 1333MHz 8GB modules now available from Other World Computing. The modules will also work with the latest model iMacs, doubling their RAM capacity to 32GB. The company offers an 8GB kit (two 4GB modules) for $72 -- a price that is up to 70 percent less than Apple's factory-installed options.