Looking at getting my first iMac (27" model). Uses will be general surfing, some QuickBooks stuff for work, and VERY MILD Gaming (Nothing a cheap video card can't handle). My question is: If I order my iMac with the 9th Gen chip set and 580X video card, upgrade the RAM after I get it to 24 Gigs by adding an additional 16, and get a decent sized SSD how much longer would I get out of this machine down the road versus buying the entry level 27" iMac with 8th Gen processor and an SSD? Would the nicer chipset and video card now get me an extra year or two or more at the end of it's usable life? I can justify the extra $$$ needed now if it will get me a few extra years later on.