I have this iMac, which I purchased in May of 2013, and it has the standard 8 GB (2x4 GB) of RAM and a 2.9 GHz quad core processor. It's starting to feel a little s-l-o-w.
I was first thinking of buying a new iMac, but I see that in almost four years the new one only has a quad core 3.3 GHz processor. And 8 GB of RAM.
Should I just add some memory to the one that I have and see if that helps?
Is there some other quantum leap in technology that's happened that isn't reflected in the speed of the processor?