I'm considering upgrading my 2011 Air (1.8 GHz Intel Core i7, 4GB, 256), but am wondering how much of a performance boost I would actually experience with my use pattern if I got a 2013 11" with the 1.7 processor and 8GB ram. I use my Air about 10 hours a day for work, and usually have the following apps going Scrivener (writing) Safari Various note taking apps (Evernote, CPN, other outlining tools) Databases (DevonThink and Bookends) calendar task manager skim So basically, nothing heavy duty, but I multitask a lot. I occasionally work with video. Any thoughts as to whether an upgrade would actually be worth the money? My hunch is that it's not, but I don't know much about what these specifications mean in practice. Performance at the moment is not bad at all, but I do have the fan going continuously at times, and I'm also thinking in terms of resale value (I feel I'm at a point now where waiting further would cause a massive decrease).