[glassx]

> In particular, Mac OS X don't even run well with only 4GB of RAM anymore

It actually runs great. I'm using a 2011 Air w/2GB (cheapest back then) and El Capitan and it's almost as fast as my 24GB Mac Pro.

I push it a bit with Logic Pro X + drum samples (for my V-Drums), but it handles that without complaints. But for web, videos and programming there isn't much of a difference.

[yuhong]

But note that the Air has a SSD.