Has anyone done a comparison of the two? I've looked pretty thoroughly, but maybe I'm not looking hard enough. I can't seem to find it anywhere on the tubes. I had a maxed out 2011 MBA and sold it (long story). I missed it a lot, so I went to the Apple store a couple of days ago and picked up a base 2012 just to see what was up. Still feels lightning quick to me... Haven't used it nearly as much as my 2011, but so far I think it's identical. One thing I've noticed is that boot/shut down times are even faster (I know that's not a basis for thorough comparison, jus' sayin').