Hello, A little bit of advice would be welcome and I'll try to not make my question too general. I have a late 2010 27" iMac with 8gb of RAM and it's increasingly driving me mad with how slow it's getting. I have a 2tb hard drive so it's not because I am tight on that. Running the latest OS X. Biggest problem is my iTunes which is quite a big library and has become utterly unusable - I mean I click a track to play it and I get a spinning beachball for 10 minutes slowing down my machine across the board. I think it's broken somehow beyond just my machine being slow but I don't know what to do about that. My large Photos library is also awkward and slow to navigate, edit etc. So the question I would have is whether it would be worth my while upgrading the Ram to 16gb on this machine in the hope of getting a big enough boost in performance so I could continue to use it a while longer. Or should I accept that it's too old and not worth my while trying to salvage it? Thanks, C.