Can't wait until the database version of the daemon is released - I've just resumed sync using an older copy of my blockchain from another machine, and bitmonerod is using 5.7G of memory to hold the blockchain.
It can run in somewhat less, but the database is working fairly well if you are able to build it from source. Any testing is very much appreciated. There is even a converter that takes the existing blockchain you have and loads it into the DB so you don't have to resync.