So,.. i'm not hip on all of this single and multi core stuff and threading or whatever. All i know is i want the fastest MAC for processing and editing photos for my PHotography business. I use PS and Lightroom at the same time and i need to be able to switch between them quickly and of course go through my photos quickly. So what i think i need is lots of ram and processing power. But my question is do i need extra processors and cores? according to http://forums.macrumors.com/showpost.php?p=7255676&postcount=148 it looks like the 2.93 quad has a better overall performance rating but the 2.26 has a better multicore speedup (whatever that is). SO,.. should i go with 2.93 quad or 2.26 octad? thanks for the input.