FFXIV will never use more than 512MB RAM with the current client. PS3-limitations... seriously
More RAM doesn't help at all in this game. Got a laptop with 4GB and a desktop with 8GB and there's absolutely no advantage. They didn't even set large address awareness. Imo games shouldn't unload anything unless they get out-off-memory errors. Would be nice if the user could define the maximum memory usage before stuff is unloaded. Async prefetch would also be nice to have. Hopefully 2.0 will have that or it will be a stuttering failure too.