The disk cache in OS X can sometimes use a fair amount of the system's RAM, and clearing it can help you figure out how much RAM your applications and system processes are using. Topher, an avid Mac ...
106386: Mac OS X 10.0: How to View Memory Usage and Installed RAM is a very useful TIL article on how to determine memory usage of individual applications. the About Mac OS X window no longer supplies ...
Memory Diag is a nice free utility app available on the Mac App Store. Like a lot of memory utilities (including the OS X Activity Monitor), it will analyze your RAM usage, tell you what applications ...