In all honesty Wow is pretty good with RAM until you add in mods, Then you are at the whim of the person who made them (I went from 1.5gigs per wow down to around 900kb just by adjusting which mods load where). Anywho, the one thing I wanted to point out was hard drive speed. This can be an issue depending on how you set up your wow folders. If you hop on a ship or a zeplin I have seen posts of people getting stuck on a permanent loading screen because by the time y a load a zone, the zep/boat has taken you back.