Thank you Dan for a detailed and honest response on how to upgrade an old iMac. It was very insightful and helped me make a decision on upgrade or buy a new/refur Mac. My iMac has given me 10 great years but I think it’s time to make the investment for another one for the next 10 years. Once I get my new one I think I will still do the other option which is to switch out the optical drive for a smaller SSD and see how it does. I have a hard time getting rid of my Macs. I still have a BlueBerry and a G4 sitting in the corner. LOL. Thank you again, for the honest comments about investment vs. age, and not just trying to sell upgrades.