I was all set to upgrade my 2009 Mac Book to SSD and RAM, but for not much more ($500) I was able to buy 2012 Mac Air with the SSD, double the RAM as well as newer generation, better screen, and the seller through in an external 500 Mb external HDD. It opened my eyes to the used market. It may not be the speed demon I was dreaming about when I looked at the website, but the key is that it is no longer a dream! Plus my son was the lucky recipient of a computer that wasn't great for Aperture/LR, but far better than he had. If what you have is useful to someone else (or yourself in other applications), the upgrade money might be better spent elsewhere.