Things are slowing down. I need more System RAM along with storage. I've made some simple modifications (moving iTunes and Dropbox to an external drive) but am looking at upgrading the installed 4 GB RAM with two more sticks of Crucial 8GB RAM. Alternatives: Buy a new iMac 27" retina. Buy a mac mini and use the iMac as a display. Things I do: Word processing, some minor use of InDesign and Photoshop along with Video.