Filed under: HardwareWhen people ask if they should add RAM to their computers to improve performance, fellow blogger Erica Sadun says she typically replies, "YES! Just don't buy it from Apple!" Apple's RAM upgrades have typically run about double what I actually ended up paying for them elsewhere. However, as noted by astute observers over at MacRumors, Apple has covertly changed their pricing on build-to-order RAM configurations for 27-inch iMacs, bringing the price of an 8GB upgrade down to only about $25US more