Define editing? I'm playing around with animation and plugins for AE, on a 4-core, and that's not much fun. It's fine when only dealing with the basic cutting and grading, but for more heavy stuff, I wish I had a mac pro.
To comparison... I did three music videos this summer. A friend of mine handled the editing and grading along with effects on his mac pro 8-core. In my opinion that was even too slow.
It's more in regards to work flow, as you sometimes want to nitpick maybe 5 specific seconds of a clip and see it rendered out before it's done.
Time is money and sitting around waiting for 5 minutes every time is in my oppinion unacceptable in a steady work flow.
So my judgment is:
- Short easy editing where you don't have to do effects, iMac could prolly handle it
- Longer, more elaborate editing with nice effects like lens flares or 3d compositing, I would prefer to work on a pro.
But you know how they always say, handle the things you're good at yourself and send the rest out of the house for someone else to do... if that is an option.
I just want to learn to be multiskilled and efficient at the same time, so I can't sit idle around drinking coffee while waiting for a render
Look at the bright side, at least you dont live in Denmark where the base version of the 12-core mac pro costs 6700 dollars :¨(