It’s also worth noting that FCP is pretty dumb when it comes to recognising more than one processor in your system – don’t forget it’s a very, very old piece of software, long overdue to be put in a retirement home, dribbling while staring at QVC.
Open up your activity monitor (in your utilities folder) and do command-5 to bring up the floating CPU monitor. Set FCP rendering something and watch how FCP only uses a fraction of the power you’ve just paid for. Maybe your iMac had a faster processor (but with less cores) which is more suited to vintage software like FCP.
I’m only rambling on so much because I am waiting for FCP to render something simple…using only a tiny fraction of my 12-core 2.93GHz machine’s power. And most of that power is being used by FCP to get its pipe and slippers while it complains about back pains and how things “aren’t like they used to be in my day”…
– Paul