I have a Mid 2007 24" Intel iMac running El Capitan. It's gotten somewhat slow (though EL Capitan *did* seems to reduce the number and duration of beach balls). My question is, at this point, is it worth it to do an SSD upgrade on a 9 year old (but still working) iMac? I'd probably get an Samsung 850 500GB SSD for about $150. Or should I just get a new machine. It seems like reasons NOT to are: 1) The machine is now too old for the latest OS (Sierra), so El Capitan will probably be the last OS on this. 2) It's maxed out with 4GB RAM 3) It's 9 years old and maybe something else will die soon after I spend money on an SSD Reasons *TO* SSD upgrade: 1) The machine still runs and the screen look fine to me. 2) I occasionally still use the optical drive to rip CDs (a new iMac would not have an optical drive) Looking for any guidance on whether it's wise to put money into an 9-year-old iMac.