How does After Effects run on the new Airs?

I'm assuming you know that you really should get either a Macbook Pro, iMac, or Mac Pro for After Effects and you're only asking incase you need to use it on a pinch on the air....but in case you don't:

You should really get a machine with at least 8 - 12 gigs of RAM for After Effects. It snarfs up 22 gigs of RAM on the desktop in my sig (that being said I don't use it often and haven't made use of proxies for HD video).


That being said it is run-able on the air in a pinch, but I wouldn't recommend you do a lot of rendering with it.

 

It will run faster than your current, probably. Depends on which gen. AMD processor you have, but I'm guessing it has some years on it.

I've done some simpler compositions in AE (title graphics, transitions, light re-touches) on my MBA and it's been behaving good enough. It all much depends on how advanced stuff you intend to do, really.

13" Pro won't do it much faster. It has a lesser resolution (less work space), about the same processor speed but you can expand memory further should your comps need it.