Wondering if there was any simple way to work out the best way of speccing a mac to your needs between, ram, raid, ssd etc as it seems either a dark art or a good guess? A lot of the advice I see is buy as much ram as possible as it improves everything but I think there has to be a limit to this for example if you only use one app at a time. Personally, if I'm using lightroom I don't need photoshop open and vice versa so would 12 gb be overkill with little or no benefit over 6 or even the base 3? I only open 1 16bit tiff at a time in photoshop, and the opening/saving seems to take longer than any processor action (I could be mistaken) so an ssd might be a more useful upgrade then ram? My budget would buy 12gb RAM or 6 and a small ssd that could hold 2 projects at a time (I usually only work on one at a time), if I bought 6gb would I regret not getting 12 - my mind is spinning Also activity monitor used to show both cores in my old duo machine but only shows one bar for cpu activity now how do I see activity for the individual cores?